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# Tag: CBSE

• ## CBSE 9 | Science – Study – Free

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• ## Class 10 | Mathematics

FREE Educational Tools Course Features Personalised Education Pre-Requisites Test & Enrich Study Tools Audio Visual & Digital Content Testing Tools Assign, Assess & Analyse Interactive Tools Ask, Answer & Discuss Speed Notes Notes For Quick Revision E-book Chapterwise Textbook Assignment Tools Testing Tools To Assign, Assess & Analyse NCERT Solutions Solved Exercises NCERT Exemplar HOTS…

• ## BASICS OF QUADRILATERALS | Study

Pre-Requisires Test & Enrich Quadrilaterals | Speed Notes Notes For Quick Recap Quadrilateral Any closed polygon with four sides, four angles and four vertices are called Quadrilateral. It could be regular or irregular. (Sroll down to continute …) Study Tools Audio, Visual & Digital Content Revision Notes – CBSE  09 Math – Quadrilaterals Angle Sum…

• ## CBSE 8 | Science – Study – Free

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• ## COMPONENTS OF FOOD | Study

Pre-Requisires Test & Enrich Components of Food | Speed Notes Notes For Quick Coverage Nutrients: Food substances that provide nourishment to the body are called nutrients. The major nutrients in our food are carbohydrates, proteins, fats, vitamins and minerals. In addition, food also contains dietary fibres and water. Carbohydrates and fats mainly provide energy to…

• ## SORTING MATERIALS INTO GROUPS | Study

Pre-Requisires Test & Enrich Sorting Material into Groups | Speed Notes Notes For Quick Coverage Material: A material is a substance which is used for making things. A given material could be used to make a large number of objects. It is also possible that an object could be made of a single material or…

• ## SEPARATION OF SUBSTANCES | Study

Pre-Requisires Test & Enrich Separation of Substances | Speed Notes Notes For Quick Coverage Study Tools Audio, Visual & Digital Content PURE SUBSTANCES: The substances which contain only one kind of particles are called pure substances. Elements and compounds are pure substances. ELEMENT: A substance made from identical particles of one material. COMPOUND: A substance…

• ## GETTING TO KNOW PLANTS | Study

Pre-Requisires Test & Enrich Getting to know Plants | Speed Notes Notes For Quick Coverage Plants are usually grouped into herbs, shrubs, trees, creepers and climbers. From where does a plant come?A plant comes from a seed. A seed is covered with seed coats.,The seed coats protect the seed. The seed has a baby plant…

• ## BODY MOVEMENTS | Study

Pre-Requisires Test & Enrich Body Movements | Speed Notes Notes For Quick Coverage Locomotion in the human body:(i) Human skeleton: It forms a framework that gives shape and support to the body. It consists of 206 bones. It protects internal organs. (Scroll down to Continue …) Study Tools Audio, Visual & Digital Content Locomotion: Movement…

• ## THE LIVING ORGANISMS — CHARACTERISTICS AND HABITATS | Study

Pre-Requisires Test & Enrich The Living Organisms and Their Surroundings | Speed Notes Notes For Quick Recap The surroundings where plants and animals live are called their habitat. Several kinds of plants and animals may share the same habitat. The presence of specific features and habits, which enable a plant or an animal to live…

• ## MOTION AND MEASUREMENT OF DISTANCES | Study

Pre-Requisires Test & Enrich Motion and Measurement of Distances | Speed Notes Notes For Quick Recap Study Tools Audio, Visual & Digital Content REST: The objects which remain stationary at a place and do not change their position are said to be at rest. Different modes of transport are used to go from one place…

• ## LIGHT, SHADOWS AND REFLECTIONS | Study

Pre-Requisires Test & Enrich LIGHT | Speed Notes Notes For Quick Recap Light is the natural agent that stimulates sight and makes things visible. Its path is only visible when it is scattered by dust particles present in the atmosphere. Light is a form of invisible energy. Light itsel is not visible . It makes…

• ## ELECTRICITY AND CIRCUITS | Study

Pre-Requisires Test & Enrich Electricity | Speed Notes Notes For Quick Recap Electric Circuit: Connecting wires, bulb, switch and electric cell is used in Torch, Battery, LED (Light Emitting Diode), etc. Electric current is carried by Conductor. Conductor: Materials that allow electic current to pass through them. All metals are good conductors of electricity. Carbon…

• ## FUN WITH MAGNETS | Study

Pre-Requisires Test & Enrich FUN WITH MAGNETS | Speed Notes Notes For Quick Recap Magnets: Materials that attract iron, nickel and cobalt. Natural magnet is called Iodestone or magnetite. Magnetite is a natural magnet. Magnet attracts materials like iron, nickel, cobalt. These are called magnetic materials. Materials that are not attracted towards magnet are called…

• ## AIR AROUND US | Study

Pre-Requisires Test & Enrich Air Around Us | Speed Notes Notes For Quick Recap Air: The invisible gaseous substance surrounding the earth, a mixture mainly of oxygen and nitrogen. The blanket of air that surround the earth is called atmosphere. Air is found everywhere. We cannot see air, but we can feel it. Air in…

• ## CBSE 6 | Science – Study – Free

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• ## Electric Current and its Effects | Study

Pre-Requisires Test & Enrich Electric Current | Speed Notes Notes For Quick Recap Flow of electrons through a conductor. It is convenient to represent electric components by symbols. Using these, an electric circuit can be represented by a circuit diagram. When an electric current flows through a wire, the wire gets heated. It is the…

• ## Light | Study

Pre-Requisires Test & Enrich Light | Speed Notes Notes For Quick Recap Light: It is the natural agent that stimulates sight and makes things visible. Light travels along straight line. Any polished or a shining surface acts as a mirror. An image which can be obtained on a screen is called a real image. (Scroll…

• ## Forests: Our Lifeline | Study

Pre-Requisires Test & Enrich Forests: Our Lifeline | Speed Notes Notes For Quick Recap Forest: Large area of land thickly covered with trees, bushes, etc. We get various products from the forests around us. Forest is a system comprising various plants, animals and micro-organisms. In a forest, trees from the uppermost layer, followed by shrubs,…

• ## Wastewater Story | Study

Pre-Requisires Test & Enrich Wastewater Story | Speed Notes Notes For Quick Recap Wastewater: Black-brown water which is rich in lather , mixed with oil that goes down the drains from skins, showers, toilets, laundries is called wastewater. sewage: Wastewater is generated in homes, industries, agricultural fields and in other human activities. This is called…

• ## Motion and Time | Study

Pre-Requisires Test & Enrich Motion and Time | Speed Notes Notes For Quick Recap Motion: The action or process of moving or being moved. The distance moved by an object in a unit time is called its speed. Speed of objects help us to decide which one is moving faster than the other. The speed…

• ## CBSE 7 | Science – Study – Free

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• ## Nutrition in Plants | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Nutrition: It is the mode of taking food by an organism and its utilization by the body. Nutrients: The components of food that provide nourishment to the body. All organisms take food and utilise it to get energy for the growth and maintenance of their…

• ## Nutrition in Animals | Study

Pre-Requisires Test & Enrich Nutrition in Animals | Speed Notes Notes For Quick Recap Classification based on Eating Habits: Herbivorous: Animals that eat plants or plant products. Example: Cow, sheep, goat, deer, elephant, kangaroo, giraffe, etc. Carnivorous: Animals that eat only flesh of other animals. They never eat plants. Examples: Tiger, lizard, lion, etc. Omnivorous:…

• ## Heat | Study

Pre-Requisires Test & Enrich Heat | Speed Notes Notes For Quick Recap Heat: It is a form of energy, which makes any object hot or cold. The materials which allow heat to pass through them easily are conductors of heat. The materials which do not allow heat to pass through them easily are called insulators.…

• ## Acids, Bases and Salts | Study

Pre-Requisires Test & Enrich Acids, Bases and Salts | Speed Notes Notes For Quick Recap There are three types of Substances: Acids, Bases and Salts Acids: Acids are sour in taste. They are corrosive in nature. A concentrated acid cuts through clothes and eats away the wool. If it falls on the skin, it can…

• ## Physical and Chemical Changes | Study

Pre-Requisires Test & Enrich Physical And Chemical Changes | Speed Notes Notes For Quick Recap Changes can be of two types, physical and chemical. Physical changes are changes in the physical properties of substances. Due to physical chages new substances are not formed. Physical changes may be reversible. Examples: crushing a can, glowing of an…

• ## Respiration in Organisms | Study

Pre-Requisires Test & Enrich Respiration in Organisms | Speed Notes Notes For Quick Recap Respiration is essential for survival of living organisms. It releases energy from the food. The oxygen we inhale is used to breakdown glucose into carbon dioxide and water. Energy is released in this process. The breakdown of glucose occurs in the…

• ## Transportation in Animals and Plants | Study

Pre-Requisires Test & Enrich Transportation in Animals and Plants | Speed Notes Notes For Quick Recap Transportation in animals: In most of the animals the blood that circulates in the body distributes food and oxygen to different cells of the body. It also carries waste products from different parts of the body for excretion. Circulatory…

• ## Reproduction in Plants | Study

Pre-Requisires Test & Enrich Reproduction in Plants | Speed Notes Notes For Quick Recap All organisms multiply or reproduce offspring of their own kind. In plants there are two modes of reproduction, namely (a) Asexual reproduction and (b) Sexual reproduction. There are several methods of asexual reproduction such as fragmentation, budding, spore formation and vegetative…

• ## LIGHT | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Light Light is the natural agent that stimulates sight and makes things visible. Light is reflected from all surfaces. It is a form of energy. Reflection of Light: Bouncing back of light after striking any surface such as a rough surface, Smooth surfce, shiny surface…

• ## FORCE AND PRESSURE | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Force And Pressure Force: A push or a pull, that changes or tends to change the state of rest or of uniform motion of an object or changes its direction or shape. A force arises due to the interaction between two objects. Force has magnitude…

• ## FRICTION | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Friction: Friction is the force that resists the motion of one object against another.  It is the force felt between two surfaces when one attempts to slide against the other. Causes of Friction: Friction exists between two surfaces due to irregularities on the surfaces of the…

• ## SOUND | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Sound: Vibrations that travel through the air or another medium and can be heardwhen they reach a person’s or animal’s ear. Musical Sound: The sound which produce a pleasing effect on the ear. Noise: The sounds which produce a jarring or unpleasant effect. (Scroll down…

• ## CHEMICAL EFFECTS OF ELECTRIC CURRENT | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Chemical Effects of Electric Current Materials through which electric current can pass through easily are called electric conductors or conductors of electricity. Electrical conductivity Or Electric Conductivity: Electrical conductivity is a measure of the ability of a substance to allow the flow of electric current.…

• ## SOME NATURAL PHENOMENA | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Some Natural Phenomena Some objects can be charged by rubbing with otherobjects. There are two kinds of charges — positive charge and negative charge Like charges repel and unlike charges attract each other. Study Tools Audio, Visual & Digital Content Static Electric Charges: The electric…

• ## COAL AND PETROLEUM | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Natural Resources: Resources include everything provide by the nature. They form the wealth of a country. Types of Natural Resources:(i) Inexhaustible: There are some resources that are present unlimited in nature and will not be exhausted even if used continuously. Example: Sunlight, Air. (Scroll down…

• ## COMBUSTION AND FLAME | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Combustion and Flame Combustion: The process of burning a substance in the presence of air (oxygen) andundergoes a chemical reaction to produce heat and light. The substances which burn in air are called combustible. Oxygen (in air) is essential for combustion. During the process of…

• ## CONSERVATION OF PLANTS AND ANIMALS | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Conservation of Plants and Animals Biodiversity: Occurrence of innumerable types of organisms and the whole range of their varieties (biotypes) adapted to different climates, environments and areas. Wildlife sanctuary, national park and bio-sphere reserve are names given to the areas meant for conservation and preservation…

• ## REPRODUCTION IN ANIMALS | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Reproduction in Animals Reproduction is a process in which the organisms produce the young ones of their own kind. There are two modes by which animals reproduce. These are: (i) Sexual reproduction, and (ii) Asexual reproduction (Scrolldown to continue …) Study Tools Audio, Visual &…

• ## REACHING THE AGE OF ADOLESCENCE | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Reaching The Age of Adolescence Humans become capable of reproduction after puberty. Puberty sets in between the ages of 11 years and 19 years. These children are called adolescents. The onset of puberty brings about growth of the reproductive organs. Hairs grow at various places…

• ## CROP PRODUCTION AND MANAGEMENT | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Crop Production and Management In order to provide food for a large population – regular production, proper management and distribution of food is necessary. (Scroll down to continue …) Study Tools Audio, Visual & Digital Content Crop : When plants of the same kind are…

• ## MICROORGANISMS : FRIEND AND FOE | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Micro-organisms: Micro-organisms are too small and are not visible to the un aided eye. They can survive under all types of environment, ranging from ice cold climate to hot springs and deserts to marshy lands. They are also found inside the bodies of animals including…

• ## MOTION | Study

Pre-Requisires Test & Enrich Rest And Motion | Speed Notes Notes For Quick Recap Rest And Motion Study Tools Audio, Visual & Digital Content Distance and Displacement Difference Between Displacement and Displacement Distance Displacement Distance is defined as the total length of the path travelled by an object to go from one point to another.…

• ## FORCE AND LAWS OF MOTION | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Force : Push or pull is called Force. Example: We push or pull to open a door. (Scroll down to continue …) Study Tools Audio, Visual & Digital Content Effects of Force Net or Resultant Force:  Resultant Force or Net Force acts on a body…

• ## GRAVITATION | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Study Tools Audio, Visual & Digital Content Dig Deep Topic Level Resources Sub – Topics Select A Topic Topic: Chapters Index Select Another Chapter Assessments Personalised Assessments

• ## WORK AND ENERGY | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Study Tools Audio, Visual & Digital Content Dig Deep Topic Level Resources Sub – Topics Select A Topic Topic: Chapters Index Select Another Chapter Assessments Personalised Assessments

• ## SOUND | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Study Tools Audio, Visual & Digital Content Dig Deep Topic Level Resources Sub – Topics Select A Topic Topic: Chapters Index Select Another Chapter Assessments Personalised Assessments

• ## IMPROVEMENT IN FOOD RESOURCES | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Study Tools Audio, Visual & Digital Content Dig Deep Topic Level Resources Sub – Topics Select A Topic Topic: Chapters Index Select Another Chapter Assessments Personalised Assessments

• ## TISSUES | Study

Pre-Requisires Test & Enrich Tissues | Speed Notes Notes For Quick Recap Are plants and Animals made of same types of tissues?Plants are stationary, and hence are provided with some tissues made up of dead cells, which provide mechanical strength. They have to withstand unfavourable conditions like strong winds, storms, floods etc. Animals on other…

• ## THE FUNDAMENTAL UNIT OF LIFE | Study

Pre-Requisires Test & Enrich The Fundamental Unit of Life | Speed Notes Notes For Quick Recap What are Living organisms made up of?All living organisms are made up of cells. Cell is the basic structural and functional unit of complex organisms. History of cell: Cells were first discovered by Robert Hooke in 1665 with the…

• ## MATTER IN OUR SURROUNDINGS | Study

Pre-Requisires Test & Enrich Matter In Our Surroundings | Speed Notes Notes For Quick Recap Matter: 1. Characteristics of Matter Particles Anything (Physical Material not emotions, feelings etc.) which has mass and volume (occupy space) is called matter.  We feel the presence of matter by one or more of our five sense organs. Matter is…

• ## IS MATTER AROUND US PURE | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Matter: Anything that occupies space is called matter. Example: Air, water, rock etc., Matter exists in our surroundings in both pure and impure forms. (Scroll down to continue …). Study Tools Audio, Visual & Digital Content Mixture: A mixture is a matter that contains more…

• ## ATOMS AND MOLECULES | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Study Tools Audio, Visual & Digital Content Laws of Chemical Combination: Antoine Laurent Lavoisier, is known as ‘Father of Modern Chemistry. Lavoisier put forward the law of conservation of mass, which laid the foundation of chemical sciences.  Law of Conservation of Mass:Law of Conservation of…

• ## STRUCTURE OF THE ATOM | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Study Tools Audio, Visual & Digital Content Charged Particles in Matter Atoms consist of an equal number of  protons and electrons. Protons exist in the interiors of the atom and electrons exist in the exteriors of the atom. Therefore, electrons can be removed from an…

• ## How Do Organisms Reproduce

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Study Tools Audio, Visual & Digital Content Textbook NCERT Solutions Clarify Doubts Self Assessment https://youtube.com/watch?v=b6afyqIWyYw%3Fautoplay%3D0%26mute%3D0%26controls%3D0%26start%3D324%26origin%3Dhttps%253A%252F%252Fmanage.wix.com%26playsinline%3D1%26showinfo%3D0%26rel%3D0%26iv_load_policy%3D3%26modestbranding%3D1%26enablejsapi%3D1%26widgetid%3D3 Welcome to The Right Mentor – The Ultimate Educator. Chapter 8 – How do Organisms Reproduce? 1. Do organisms create exact copies of themselves? Chromosomes in the nucleus of a…

• ## Electricity | Study

Pre-Requisires Test & Enrich Electricity | Speed Notes Notes For Quick Recap Electricity Electricity is a branch of physics that deals with the study of phenomena associated with stationary or moving electric charges.  Therefore, the various manifestations of electricity are the result of the accumulation or motion of electrons. Electricity is classified into two types.…

• ## Magnetic Effects of Electric Current | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Study Tools Audio, Visual & Digital Content The Right Mentor Educational Services www.therightmentor.com MAGNETIC EFFECTS OF ELECTRIC CURRENT | ELECTROMAGNETISM | FULL NOTES Chapter At A Glance Interactive Notes E-Book L-Plan Solutions Assessment (Quiz Time) Assignment (Worksheet/QB) Summary Interactive Notes          Summary…

• ## Our Environment | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Study Tools Audio, Visual & Digital Content Dig Deep Topic Level Resources Sub – Topics Select A Topic Topic: Chapters Index Select Another Chapter Assessments Personalised Assessments

• ## Carbon and its Compounds | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Study Tools Audio, Visual & Digital Content Revision Notes on Carbon and its Compounds Two or more elements combine to form compounds. There are two types of compounds- Organic Compound and Inorganic Compounds. Organic compounds are the one which are made up of carbon and…

• ## Life Processes | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Study Tools Audio, Visual & Digital Content Chapter 6 -Life Processes What are life processes? Biology is the study of living things. All living things are called organisms, both plants and animals are living organisms. But how we decide whether something is living or non-living…

• ## Control and Coordination | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Study Tools Audio, Visual & Digital Content Chapter 7- Control and Coordination Animals- Nervous System: Nervous system is the organ system present in the animals to control and coordinate different activities of the body. Nervous system comprises ofthe brain, thespinal cord, anda huge network of…

• ## How do Organisms Reproduce | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Study Tools Audio, Visual & Digital Content Textbook NCERT Solutions Clarify Doubts Self Assessment https://youtube.com/watch?v=b6afyqIWyYw%3Fautoplay%3D0%26mute%3D0%26controls%3D0%26start%3D324%26origin%3Dhttps%253A%252F%252Fmanage.wix.com%26playsinline%3D1%26showinfo%3D0%26rel%3D0%26iv_load_policy%3D3%26modestbranding%3D1%26enablejsapi%3D1%26widgetid%3D3 Welcome to The Right Mentor – The Ultimate Educator. Chapter 8 – How do Organisms Reproduce? 1. Do organisms create exact copies of themselves? Chromosomes in the nucleus of a…

• ## Heredity | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Study Tools Audio, Visual & Digital Content Chapter 9 -Heredity and Evolution 1. Accumulation of variation during Reproduction. Variations in an individual may be an advantage or disadvantage for it. It may enable or disable it to cope with changes in the environment. Advantageous variations…

• ## Light – Reflection and Refraction | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Study Tools Audio, Visual & Digital Content The Right Mentor Educational Services Mr. Amarnath Reddy Email: info@therightmentor.com www.therightmentor.com CBSE 10 PHYSICS Light – Reflection And Refraction _____________________________________________             Full Notes Introduction To Reflection and Refraction of Light Light travels in a straight path in a uniform…

• ## The Human Eye and the Colourful World | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Study Tools Audio, Visual & Digital Content Dig Deep Topic Level Resources Sub – Topics Select A Topic Topic: Chapters Index Select Another Chapter Assessments Personalised Assessments

• ## Chemical Reactions and Equations | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Chemical Reactions and Equations | Study Tools Audio, Visual & Digital Content Chemical Reactions and Equations Any process that involves the rearrangement of structure of the substance or conversion of reactants into products is defined as Chemical Reaction. For a Chemical Reaction to occur, the…

• ## Acids, Bases and Salts | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Study Tools Audio, Visual & Digital Content ACIDS, BASES AND SALTS | FULL NOTES The taste of the food is due to the presence of acids and bases in them. Acids Reactions with Acids 1. Reaction of Acid with Metal Acid + Metal → Salt…

• ## Metals and Non-metals | Study

Pre-Requisires Test & Enrich Metals and Non-metals | Speed Notes Notes For Quick Recap Study Tools Audio, Visual & Digital Content Elements are classified as metals and non-metals based on different properties. The properties of metals and non-metals are given in the form of table below- Metals Non-metals Metals are lustrous, that is, they have…

• ## INTEGERS | Study

Pre-Requisires Test & Enrich Integers | Speed Notes Notes For Quick Recap We haveseen that there are times whenwe need touse numbers witha negative sign. This is when we want to go below zero on the number line. These are called negative numbers. Some examples of their use can be in temperature scale, water level…

• ## FRACTIONS | Study

Pre-Requisires Test & Enrich Fractions | Speed Notes Notes For Quick Recap What havewe discussed? A fraction is a number representing a partof a whole. The whole maybe a single object or agroup of objects. (Scroll down to continue …) Study Tools Audio, Visual & Digital Content Whenexpressing a situation of counting partsto write a…

• ## DECIMALS | Study

Pre-Requisires Test & Enrich Decimals | Speed Notes Notes For Quick Recap To understand the parts of one whole (i.e. a unit) we represent by a block divided into 10 eaual parts means (1/10) th of a unit. (Scroll down to continue …) Study Tools Audio, Visual & Digital Content Addition of Decimals: Decimalscan be…

• ## DATA HANDLING | Study

Pre-Requisires Test & Enrich Data Handling | Speed Notes Notes For Quick Recap Data: A collection of numbers gathered to give someinformation. Recording Data:Data can becollected from different sources. Pictograph: The representation of data through pictures of objects. It helps answer the questions onthe data ata glance. (Scroll down to continue …) Study Tools Audio,…

• ## MENSURATION | Study

Pre-Requisires Test & Enrich Mensuration | Speed Notes Notes For Quick Recap Perimeter is the length of the boundary of the geometric shape. In other words the distance covered along theboundary forming aclosed figure whenyou go round the figure once. (a) Perimeter of arectangle = 2 × (length + breadth) (b) Perimeter of a square…

• ## ALGEBRA | Study

Pre-Requisires Test & Enrich Algebra | Speed Notes Notes For Quick Recap Algebra: A generalization of arithmetic in which letters representing numbers are combined according to the rules of arithmetic. We looked at patterns of making letters and other shapes using matchsticks. We learnt how to write the general relation between the number of matchsticks…

• ## RATIO AND PROPORTION | Study

Pre-Requisires Test & Enrich Ratio and Proportion Comparison By Taking Difference | Speed Notes Notes For Quick Recap CHAPTER 12 Ratio and Proportion Comparison by taking difference: For comparing quantities of thesame type, wecommonly use themethod of taking difference between thequantities. Some times thecomparison by difference does not makebetter sense thanthe comparison by division. (Scroll…

• ## CBSE 6 | Mathematics – Study – Free

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• ## KNOWING OUR NUMBERS | Study

Pre-Requisires Test & Enrich Whole Numbers | Speed Notes Notes For Quick Recap Whole Numbers The numbers 1,2, 3, ……which we usefor counting areknown as natural numbers. If you add1 to a natural number, we get itssuccessor. If yousubtract 1 froma natural number, you get itspredecessor. (Scroll down to continue …) Study Tools Audio, Visual…

• ## PLAYING WITH NUMBERS | Study

Pre-Requisires Test & Enrich PLAYING WITH NUMBERS | Speed Notes Notes For Quick Recap We have discussed multiples, divisors, factors and have seenhow to identify factors and multiples. We have discussed and discovered thefollowing: (a) A factor of a number is an exactdivisor of thatnumber. (Scroll down to continue …) Study Tools Audio, Visual &…

• ## BASIC GEOMETRICAL IDEAS | Study

Pre-Requisires Test & Enrich Basic Geometrical Ideas | Speed Notes Notes For Quick Recap A point determines a location. It is usually denoted by a capital letter. A line segment corresponds to the shortest distancebetween two points. (Scroll down to continue …) Study Tools Audio, Visual & Digital Content The line Two distinct lines meeting…

• ## UNDERSTANDING ELEMENTARY SHAPES | Study

Pre-Requisires Test & Enrich Understanding Elementary Shapes |Speed Notes Notes For Quick Recap The distance betweenthe end pointsof a line segment is its length. A graduatedruler and the divider are useful to compare lengthsof line segments. When a hand of a clock moves from one position to another position we have an examplefor an angle.…

• ## Visualising Solid Shapes | Study

Pre-Requisires Test & Enrich Visualising SolidShapes | Speed Notes Notes For Quick Recap The circle, thesquare, the rectangle, the quadrilateral and the triangle are examples of plane figures; the cube, the cuboid, the sphere, the cylinder, the cone and the pyramid areexamples of solid shapes. (Scroll down to continue …) Study Tools Audio, Visual &…

• ## Symmetry | Study

Pre-Requisires Test & Enrich Congruence of Triangles | Speed Notes Notes For Quick Recap Congruence: The relation of two objects being congruent is called congruence. (Scroll down to continue …) Study Tools Audio, Visual & Digital Content Chapter – 7 Congruence of Triangles SSS Congruence of two triangles: Under a given correspondence, two triangles are…

• ## Rational Numbers | Study

Pre-Requisires Test & Enrich Rational Numbers | Speed Notes Notes For Quick Recap Rational Number: A number that can be expressed in the form (Scroll down to continue …) Audio, Visual & Digital Content 14. Every positive rational number is greater than zero. 15. Every negative rational number is less than zero. 16. The rational…

• ## Perimeter and Area | Study

Pre-Requisires Test & Enrich Perimeter and Area | Speed Notes Notes For Quick Recap Perimeter is the distance around a closed figure whereasarea is the part of plane occupied by the closedfigure. Area is the measure of the part of plane or regionenclosed by it. (Scroll down to continue …) Study Tools Audio, Visual &…

• ## Exponents and Powers | Study

Pre-Requisires Test & Enrich Exponents and Powers Exponents | Speed Notes Notes For Quick Recap Exponents are used to express large numbers in shorter form to make them easy to read, understand, compare and operate upon. (Scroll down to continue …) Study Tools Audio, Visual & Digital Content Expressing Large Numbers in the Standard Form:…

• ## The Triangle and its Properties | Study

Pre-Requisires Test & Enrich The Triangle and its Properties Triangles | Speed Notes Notes For Quick Recap A closed plane figure bounded by three linesegments. The six elements of a triangle are its three angles and thethree sides. The line segment joining a vertex of a triangle to the mid point of its opposite side…

• ## Comparing Quantities | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Comparing Quantities: Weare often requiredto compare two quantities, in our dailylife. They may be heights, weights, salaries, marks etc. To compare two quantities, their units must be the same. We are often required to compare two quantities in our daily life. They may be heights,…

• ## Integers | Study

Pre-Requisires Test & Enrich Integers | Speed Notes Notes For Quick Recap Integers are a bigger collection of numbers which is formed by whole numbers and their negatives. You have studied inthe earlier class, about the representation of integers onthe number lineand their addition and subtraction. (Scroll down to continue …) Study Tools Audio, Visual…

• ## Fractions and Decimals | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap (Scroll down to continue …) Study Tools Audio, Visual & Digital Content Fractions: 4. A fraction whose numerator is less than the denominator is called a proper fraction. 5. A fraction whose numerator is more than or equal to the denominator is called animproper fraction.…

• ## Data Handling | Study

Pre-Requisires Test & Enrich Data Handling | Speed Notes Notes For Quick Recap The collection, recording and presentation of data help us organiseour experiences and draw inferences from them. Before collecting data we need to know what we would use it for. The data that is collected needs to be organised in a propertable, so…

• ## Simple Equations | Study

Pre-Requisires Test & Enrich Simple Equations | Speed Notes Notes For Quick Recap An equation isa condition ona variable suchthat two expressions in the variable should have equalvalue. Thevalue of thevariable for whichthe equation issatisfied is called the solution ofthe equation. An equation remains the same if the LHSand the RHSare interchanged. (Scroll down to…

• ## Lines and Angles | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap We recall that (i) A line-segment has two end points. (ii) A ray has only one end point (its vertex);and (III) A line has no end points on either side. An angle is formed when two lines (or rays or line-segments) meet. Study Tools Audio,…

• ## Mensuration | Study

Pre-Requisires Test & Enrich Mensuration | Speed Notes Notes For Quick Recap Perimeter: Length of boundary of a simple closed figure. Perimeter of Rectangle = 2(l +b)Perimeter of Square = 4aPerimeter of Parallelogram = 2(sum of two adjacent sides)Area: The measure of region enclosed in a simple closed figure. Area of a trapezium = half…

• ## Understanding Quadrilaterals | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap A quadrilateral has 10 parts – 4 sides, 4 angles and 2 diagonals. Five measurements can determine a quadrilateral uniquely. (Scroll down to continue …) Study Tools Audio, Visual & Digital Content Curve: Curve is a figure formed on a plane surface by joining a…

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• ## Direct And Inverse Proportions | Study

Pre-Requisires Test & Enrich Direct and Inverse Proportions | Speed Notes Notes For Quick Recap Variations: If the values of two quantities depend on each other in such a way that a change in one causes corresponding change in the other, then the two quantities are said to be in variation. (Scroll down to continue…

• ## Factorisation | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Factorisation: Representation of an algebraic expression as the product of two or more expressions is called factorization. Each such expression is called a factor of the given algebraic expression. (Scroll down to continue …) Study Tools Audio, Visual & Digital Content When we factorise an…

• ## Introduction to Graphs | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Graphical presentation of data is easier to understand. Study Tools Audio, Visual & Digital Content Introduction to Graphs A line graph displays data that changes continuously over periods of time. A line graph which is a whole unbroken line is called a linear graph. For…

• ## Exponents And Powers | Study

Pre-Requisires Test & Enrich Exponents and Powers | Speed Notes Notes For Quick Recap Numbers with exponents obey the following laws of exponents.  Very small numbers can be expressed in standard form using negative exponents. (Scroll down to continue …) Study Tools Audio, Visual & Digital Content Use of Exponents to Express Small Number in…

• ## Data Handling | Study

Pre-Requisires Test & Enrich Data Handling | Speed Notes Notes For Quick Recap Data Handling: Deals with the process of collecting data, presenting it and getting result. Data mostly available to us in an unorganised form is called raw data. (Scroll down to continue …) Study Tools Audio, Visual & Digital Content Grouped data can…

• ## Squares And Square Roots | Study

Pre-Requisires Test & Enrich Squares and Square Roots | Speed Notes Notes For Quick Recap Square: Number obtained when a number is multiplied by itself. It is the number raised to the power 2. 22 = 2 x 2=4(square of 2 is 4). If a natural number m can be expressed as n2, where n…

• ## Cubes And Cube Roots | Study

Pre-Requisires Test & Enrich Cubes and Cube Root | Speed Notes Notes For Quick Recap Cube number: Number obtained when a number is multiplied by itself three times. 23 = 2 x 2 x 2 = 8, 33 = 3 x 3 x 3=27, etc. Numbers like 1729, 4104, 13832, are known as Hardy –…

• ## Comparing Quantities | Study

Pre-Requisires Test & Enrich Comparing Quantities | Speed Notes Notes For Quick Recap Ratio: Comparing by division is called ratio. Quantities written in ratio have the sameunit. Ratio has no unit. (Scroll down to continue …) Study Tools Audio, Visual & Digital Content Equality of two ratios is called proportion. Product of extremes = Product…

• ## Algebraic Expressions And Identities | Study

Pre-Requisires Test & Enrich Algebraic Expressions and Identities | Speed Notes Notes For Quick Recap Expressions are formed from variables and constants. Constant: A symbol having a fixed numerical value. Example: 2,, 2.1, etc. (Scroll down to continue …) Study Tools Audio, Visual & Digital Content Variable: A symbol which takes various numerical values. Example:…

• ## Rational Numbers | Study

Pre-Requisires Test & Enrich Rational Numbers | Speed Notes Notes For Quick Recap Rational numbers are closed under the operations of addition, subtraction and multiplication, But not in division. (Scroll down to continue …) Study Tools Audio, Visual & Digital Content The operations addition and multiplication are(i) commutative for rational numbers. (ii) associative for rational…

• ## Linear Equations In One Variable | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap A statement of equality of two algebraic expressions involving one or more variables. Example: x + 2 = 3 Linear Equation in One variable: The expressions which form the equation that contain single variable and the highest power of the variable in the equation is…

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• ## LINES AND ANGLES | Study

Pre-Requisires Test & Enrich Lines And Angles | Speed Notes Notes For Quick Recap Basic terms and Definitions 1. Point – A Point is that which has no component. It is represented by a dot. 2. Line – When we join two distinct points then we get a line. A line has no endpoints; it…

Pre-Requisires Test & Enrich Quadrilaterals | Speed Notes Notes For Quick Recap Quadrilateral Any closed polygon with four sides, four angles and four vertices are called Quadrilateral. It could be regular or irregular. (Sroll down to continute …) Study Tools Audio, Visual & Digital Content Revision Notes – CBSE  09 Math – Quadrilaterals Angle Sum…

• ## HERON’S FORMULA | Study

Pre-Requisires Test & Enrich Heron’s Formula | Speed Notes Notes For Quick Recap Perimeter Perimeter is defined as the outside boundary of any closed shape.  To calculate the perimeter of a given shape we need to add all the sides of the shape. Example: The perimeter of a rectangle is the sum of its all…

• ## INTRODUCTION TO EUCLID’S GEOMETRY | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Introduction to Euclid Geometry The necessity of geometry had been felt from ancient times in different parts of the world. The practical problems faced by people of ancient civilization had developed this branch of mathematics. Let us cite few examples. With floods in the river,…

• ## NUMBER SYSTEMS | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Introduction to Natural Numbers Non-negative counting numbers excluding zero are called Natural Numbers. N = 1, 2, 3, 4, 5, ………. Whole Numbers All natural numbers including zero are called Whole Numbers. W = 0, 1, 2, 3, 4, 5, ……………. (Scroll down to continue…

• ## LINEAR EQUATIONS IN TWO VARIABLES | Study

Pre-Requisires Test & Enrich Linear Equations in Two Variables | Speed Notes Notes For Quick Recap Linear Equations The equation of a straight line is the linear equation. It could be in one variable or two variables. Linear Equation in One Variable The equation with one variable in it is known as a Linear Equation…

• ## COORDINATE GEOMETRY | Study

Pre-Requisires Test & Enrich Coordinate Geometry: Cartesian Plane | Speed Notes Notes For Quick Recap Cartesian System A plane formed by two number lines, one horizontal and the other vertical, such that they intersect each other at their zeroes, and then they form a Cartesian Plane. Scroll Down To Continue … Study Tools Audio, Visual…

• ## POLYNOMIALS | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Study Tools Audio, Visual & Digital Content Revision Notes on Polynomials Polynomial A polynomial is an algebraic expression that includes constants, variables, and exponents. It is the expression in which the variables have only positive integral powers. Example 1. 4×3 + 3×2 + x +3…

• ## TRIANGLES | Study

Pre-Requisires Test & Enrich Triangles | Speed Notes Notes For Quick Recap Similar Geometric Figures: Two geometric figures which are the same in shape, such that one is simply a copy of the other on a smaller scale or a larger scale, are called similar geometric figures. Two geometric figures are said to be similar…

• ## CIRCLES | Study

Pre-Requisires Test & Enrich Circles | Speed Notes Notes For Quick Recap Introduction to Circles There are many objects in our life which are round in shape. A few examples are the clock, dart board, cartwheel, ring, Vehicle wheel, Coins, etc. (Scroll down to continue …) Study Tools Audio, Visual & Digital Content Circles Interior…

• ## STATISTICS | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Study Tools Audio, Visual & Digital Content Statistics Statistics is the study of collection, organization, analysis and interpretation of data. Data Data is a distinct piece of information in the form of fact or figures collected or represented for any specific purpose. The word data…

• ## SURFACE AREAS AND VOLUMES | Study

Pre-Requisires Test & Enrich Surface Areas and Volumes | Speed Notes Notes For Quick Recap Plane figure The figures which we can be drawn on a flat surface or that lie on a plane are called Plane Figure. Example – Circle, Square, Rectangle etc. Solid figures The 3D shapes which occupy some space are called…

• ## Class 9 | Mathematics

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• ## Class 10 | Mathematics

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• ## Class 10 | Science

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• ## COORDINATE GEOMETRY | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Cartesian System A plane formed by two number lines, one horizontal and the other vertical, such that they intersect each other at their zeroes, and then they form a Cartesian Plane. Scroll Down To Continue … Study Tools Audio, Visual & Digital Content Coordinate Axes:…

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• ## Class 6 | Mathematics

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• ## Class 7 | Mathematics

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• ## Class 8 | Mathematics

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• ## Class 9 | Science

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• ## Class 10 | Science | All In One

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• ## Class 6 | Science

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• ## Class 7 | Science

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• ## Class 8 | Science

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• ## Copy of WHOLE NUMBERS | Study

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• ## Copy of COMPONENTS OF FOOD | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Study Tools Audio, Visual & Digital Content Dig Deep Topic Level Resources Sub – Topics Select A Topic Topic: Chapters Index Select Another Chapter Assessments Personalised Assessments

• ## COMPONENTS OF FOOD | Study

Pre-Requisires Test & Enrich Components of Food | Speed Notes Notes For Quick Coverage Nutrients: Food substances that provide nourishment to the body are called nutrients. The major nutrients in our food are carbohydrates, proteins, fats, vitamins and minerals. In addition, food also contains dietary fibres and water. Carbohydrates and fats mainly provide energy to…

• ## SORTING MATERIALS INTO GROUPS | Study

Pre-Requisires Test & Enrich Sorting Material into Groups | Speed Notes Notes For Quick Coverage Material: A material is a substance which is used for making things. A given material could be used to make a large number of objects. It is also possible that an object could be made of a single material or…

• ## SEPARATION OF SUBSTANCES | Study

Pre-Requisires Test & Enrich Separation of Substances | Speed Notes Notes For Quick Coverage Study Tools Audio, Visual & Digital Content PURE SUBSTANCES: The substances which contain only one kind of particles are called pure substances. Elements and compounds are pure substances. ELEMENT: A substance made from identical particles of one material. COMPOUND: A substance…

• ## GETTING TO KNOW PLANTS | Study

Pre-Requisires Test & Enrich Getting to know Plants | Speed Notes Notes For Quick Coverage Plants are usually grouped into herbs, shrubs, trees, creepers and climbers. From where does a plant come?A plant comes from a seed. A seed is covered with seed coats.,The seed coats protect the seed. The seed has a baby plant…

• ## BODY MOVEMENTS | Study

Pre-Requisires Test & Enrich Body Movements | Speed Notes Notes For Quick Coverage Locomotion in the human body:(i) Human skeleton: It forms a framework that gives shape and support to the body. It consists of 206 bones. It protects internal organs. (Scroll down to Continue …) Study Tools Audio, Visual & Digital Content Locomotion: Movement…

• ## THE LIVING ORGANISMS — CHARACTERISTICS AND HABITATS | Study

Pre-Requisires Test & Enrich The Living Organisms and Their Surroundings | Speed Notes Notes For Quick Recap The surroundings where plants and animals live are called their habitat. Several kinds of plants and animals may share the same habitat. The presence of specific features and habits, which enable a plant or an animal to live…

• ## MOTION AND MEASUREMENT OF DISTANCES | Study

Pre-Requisires Test & Enrich Motion and Measurement of Distances | Speed Notes Notes For Quick Recap Study Tools Audio, Visual & Digital Content REST: The objects which remain stationary at a place and do not change their position are said to be at rest. Different modes of transport are used to go from one place…

• ## LIGHT, SHADOWS AND REFLECTIONS | Study

Pre-Requisires Test & Enrich LIGHT | Speed Notes Notes For Quick Recap Light is the natural agent that stimulates sight and makes things visible. Its path is only visible when it is scattered by dust particles present in the atmosphere. Light is a form of invisible energy. Light itsel is not visible . It makes…

• ## ELECTRICITY AND CIRCUITS | Study

Pre-Requisires Test & Enrich Electricity | Speed Notes Notes For Quick Recap Electric Circuit: Connecting wires, bulb, switch and electric cell is used in Torch, Battery, LED (Light Emitting Diode), etc. Electric current is carried by Conductor. Conductor: Materials that allow electic current to pass through them. All metals are good conductors of electricity. Carbon…

• ## FUN WITH MAGNETS | Study

Pre-Requisires Test & Enrich FUN WITH MAGNETS | Speed Notes Notes For Quick Recap Magnets: Materials that attract iron, nickel and cobalt. Natural magnet is called Iodestone or magnetite. Magnetite is a natural magnet. Magnet attracts materials like iron, nickel, cobalt. These are called magnetic materials. Materials that are not attracted towards magnet are called…

• ## AIR AROUND US | Study

Pre-Requisires Test & Enrich Air Around Us | Speed Notes Notes For Quick Recap Air: The invisible gaseous substance surrounding the earth, a mixture mainly of oxygen and nitrogen. The blanket of air that surround the earth is called atmosphere. Air is found everywhere. We cannot see air, but we can feel it. Air in…

• ## Class 6 | Science | All In One

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• ## Nutrition in Plants | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Nutrition: It is the mode of taking food by an organism and its utilization by the body. Nutrients: The components of food that provide nourishment to the body. All organisms take food and utilise it to get energy for the growth and maintenance of their…

• ## Nutrition in Animals | Study

Pre-Requisires Test & Enrich Nutrition in Animals | Speed Notes Notes For Quick Recap Classification based on Eating Habits: Herbivorous: Animals that eat plants or plant products. Example: Cow, sheep, goat, deer, elephant, kangaroo, giraffe, etc. Carnivorous: Animals that eat only flesh of other animals. They never eat plants. Examples: Tiger, lizard, lion, etc. Omnivorous:…

• ## Heat | Study

Pre-Requisires Test & Enrich Heat | Speed Notes Notes For Quick Recap Heat: It is a form of energy, which makes any object hot or cold. The materials which allow heat to pass through them easily are conductors of heat. The materials which do not allow heat to pass through them easily are called insulators.…

• ## Acids, Bases and Salts | Study

Pre-Requisires Test & Enrich Acids, Bases and Salts | Speed Notes Notes For Quick Recap There are three types of Substances: Acids, Bases and Salts Acids: Acids are sour in taste. They are corrosive in nature. A concentrated acid cuts through clothes and eats away the wool. If it falls on the skin, it can…

• ## Physical and Chemical Changes | Study

Pre-Requisires Test & Enrich Physical And Chemical Changes | Speed Notes Notes For Quick Recap Changes can be of two types, physical and chemical. Physical changes are changes in the physical properties of substances. Due to physical chages new substances are not formed. Physical changes may be reversible. Examples: crushing a can, glowing of an…

• ## Respiration in Organisms | Study

Pre-Requisires Test & Enrich Respiration in Organisms | Speed Notes Notes For Quick Recap Respiration is essential for survival of living organisms. It releases energy from the food. The oxygen we inhale is used to breakdown glucose into carbon dioxide and water. Energy is released in this process. The breakdown of glucose occurs in the…

• ## Transportation in Animals and Plants | Study

Pre-Requisires Test & Enrich Transportation in Animals and Plants | Speed Notes Notes For Quick Recap Transportation in animals: In most of the animals the blood that circulates in the body distributes food and oxygen to different cells of the body. It also carries waste products from different parts of the body for excretion. Circulatory…

• ## Reproduction in Plants | Study

Pre-Requisires Test & Enrich Reproduction in Plants | Speed Notes Notes For Quick Recap All organisms multiply or reproduce offspring of their own kind. In plants there are two modes of reproduction, namely (a) Asexual reproduction and (b) Sexual reproduction. There are several methods of asexual reproduction such as fragmentation, budding, spore formation and vegetative…

• ## Motion and Time | Study

Pre-Requisires Test & Enrich Motion and Time | Speed Notes Notes For Quick Recap Motion: The action or process of moving or being moved. The distance moved by an object in a unit time is called its speed. Speed of objects help us to decide which one is moving faster than the other. The speed…

• ## Electric Current and its Effects | Study

Pre-Requisires Test & Enrich Electric Current | Speed Notes Notes For Quick Recap Flow of electrons through a conductor. It is convenient to represent electric components by symbols. Using these, an electric circuit can be represented by a circuit diagram. When an electric current flows through a wire, the wire gets heated. It is the…

• ## Light | Study

Pre-Requisires Test & Enrich Light | Speed Notes Notes For Quick Recap Light: It is the natural agent that stimulates sight and makes things visible. Light travels along straight line. Any polished or a shining surface acts as a mirror. An image which can be obtained on a screen is called a real image. (Scroll…

• ## Forests: Our Lifeline | Study

Pre-Requisires Test & Enrich Forests: Our Lifeline | Speed Notes Notes For Quick Recap Forest: Large area of land thickly covered with trees, bushes, etc. We get various products from the forests around us. Forest is a system comprising various plants, animals and micro-organisms. In a forest, trees from the uppermost layer, followed by shrubs,…

• ## Wastewater Story | Study

Pre-Requisires Test & Enrich Wastewater Story | Speed Notes Notes For Quick Recap Wastewater: Black-brown water which is rich in lather , mixed with oil that goes down the drains from skins, showers, toilets, laundries is called wastewater. sewage: Wastewater is generated in homes, industries, agricultural fields and in other human activities. This is called…

• ## CROP PRODUCTION AND MANAGEMENT | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Crop Production and Management In order to provide food for a large population – regular production, proper management and distribution of food is necessary. (Scroll down to continue …) Study Tools Audio, Visual & Digital Content Crop : When plants of the same kind are…

• ## MICROORGANISMS : FRIEND AND FOE | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Micro-organisms: Micro-organisms are too small and are not visible to the un aided eye. They can survive under all types of environment, ranging from ice cold climate to hot springs and deserts to marshy lands. They are also found inside the bodies of animals including…

• ## COAL AND PETROLEUM | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Natural Resources: Resources include everything provide by the nature. They form the wealth of a country. Types of Natural Resources:(i) Inexhaustible: There are some resources that are present unlimited in nature and will not be exhausted even if used continuously. Example: Sunlight, Air. (Scroll down…

• ## COMBUSTION AND FLAME | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Combustion and Flame Combustion: The process of burning a substance in the presence of air (oxygen) andundergoes a chemical reaction to produce heat and light. The substances which burn in air are called combustible. Oxygen (in air) is essential for combustion. During the process of…

• ## CONSERVATION OF PLANTS AND ANIMALS | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Conservation of Plants and Animals Biodiversity: Occurrence of innumerable types of organisms and the whole range of their varieties (biotypes) adapted to different climates, environments and areas. Wildlife sanctuary, national park and bio-sphere reserve are names given to the areas meant for conservation and preservation…

• ## REPRODUCTION IN ANIMALS | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Reproduction in Animals Reproduction is a process in which the organisms produce the young ones of their own kind. There are two modes by which animals reproduce. These are: (i) Sexual reproduction, and (ii) Asexual reproduction (Scrolldown to continue …) Study Tools Audio, Visual &…

• ## REACHING THE AGE OF ADOLESCENCE | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Reaching The Age of Adolescence Humans become capable of reproduction after puberty. Puberty sets in between the ages of 11 years and 19 years. These children are called adolescents. The onset of puberty brings about growth of the reproductive organs. Hairs grow at various places…

• ## FORCE AND PRESSURE | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Force And Pressure Force: A push or a pull, that changes or tends to change the state of rest or of uniform motion of an object or changes its direction or shape. A force arises due to the interaction between two objects. Force has magnitude…

• ## FRICTION | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Friction: Friction is the force that resists the motion of one object against another.  It is the force felt between two surfaces when one attempts to slide against the other. Causes of Friction: Friction exists between two surfaces due to irregularities on the surfaces of the…

• ## SOUND | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Sound: Vibrations that travel through the air or another medium and can be heardwhen they reach a person’s or animal’s ear. Musical Sound: The sound which produce a pleasing effect on the ear. Noise: The sounds which produce a jarring or unpleasant effect. (Scroll down…

• ## CHEMICAL EFFECTS OF ELECTRIC CURRENT | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Chemical Effects of Electric Current Materials through which electric current can pass through easily are called electric conductors or conductors of electricity. Electrical conductivity Or Electric Conductivity: Electrical conductivity is a measure of the ability of a substance to allow the flow of electric current.…

• ## SOME NATURAL PHENOMENA | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Some Natural Phenomena Some objects can be charged by rubbing with otherobjects. There are two kinds of charges — positive charge and negative charge Like charges repel and unlike charges attract each other. Study Tools Audio, Visual & Digital Content Static Electric Charges: The electric…

• ## LIGHT | Study

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Light Light is the natural agent that stimulates sight and makes things visible. Light is reflected from all surfaces. It is a form of energy. Reflection of Light: Bouncing back of light after striking any surface such as a rough surface, Smooth surfce, shiny surface…

• ## MOTION | Study

Pre-Requisires Test & Enrich Rest And Motion | Speed Notes Notes For Quick Recap Rest And Motion Study Tools Audio, Visual & Digital Content Distance and Displacement Difference Between Displacement and Displacement Distance Displacement Distance is defined as the total length of the path travelled by an object to go from one point to another.…

• ## Electricity | Study

Pre-Requisires Test & Enrich Electricity | Speed Notes Notes For Quick Recap Electricity Electricity is a branch of physics that deals with the study of phenomena associated with stationary or moving electric charges.  Therefore, the various manifestations of electricity are the result of the accumulation or motion of electrons. Electricity is classified into two types.…

• ## Real Numbers | Study

Pre-Requisires Test & Enrich Real Numbers | Speed Notes Notes For Quick Recap Introduction: Euclid’s Division Lemma/Euclid’s Division Algorithm :  Given positive integers a and b, there exist unique integers q and r satisfying a=bq+r, 0 r<b. This statement is nothing but a restatement of the long division process in which q is called the…

• ## Polynomials | Study

Pre-Requisires Test & Enrich Polynomials | Speed Notes Notes For Quick Recap Introduction : Polynomial :  Any expression of the form a0xn+a1xn-1+a2xn-2+….an is called a polynomial of degree n in variable x ; a0≠0, where n is a non-negative integer and a0, a1, a2, ….., and are real numbers, called the coefficients of the terms of…

• ## Pair of Linear Equations in Two Variables | Material

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• ## Quadratic Equations | Material

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Study Tools Audio, Visual & Digital Content Dig Deep Topic Level Resources Sub – Topics Select A Topic Topic: Chapters Index Select Another Chapter Assessments Personalised Assessments

• ## Triangles | Material

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Study Tools Audio, Visual & Digital Content Dig Deep Topic Level Resources Sub – Topics Select A Topic Topic: Chapters Index Select Another Chapter Assessments Personalised Assessments

• ## Introduction to Trigonometry | Study

Pre-Requisires Test & Enrich Introduction To Trigonometry | Speed Notes Notes For Quick Recap An angle is positive if its rotation is in the anticlockwise and negative if its rotation is in the clockwise direction. An angle is positive if its rotation is in the anticlockwise and negative if its rotation is in the clockwise…

• ## Some Applications of Trigonometry | Material

Pre-Requisires Test & Enrich Some Applications Of Trigonometry | Speed Notes Notes For Quick Recap Introduction : One of the main applications of trigonometry is to find the distance between two or more than two places or to find the height of the object or the angle subtended by any object at a given point…

• ## Circles | Material

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Study Tools Audio, Visual & Digital Content Pre-Requisites Circle: Circle is a round shaped figure has no corners or edges. A circle is the locus of all points in a plane which are at constant distance (called radius) from a fixed point (called centre). A…

• ## Areas Related to Circles | Material

Pre-Requisires Test & Enrich Areas Related To Circles | Speed Notes Notes For Quick Recap Introduction : Circumference of a circle Or Perimeter of a circle : The distance around the circle or the length of a circle is called its circumference or perimeter. (Scroll down to continue …) Study Tools Audio, Visual & Digital…

• ## Surface Areas and Volumes | Material

Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Cuboid What is a cuboid? Parts And Their Alignment Of A Cuboid Faces The flat surfaces of a cuboid are known as its faces. A cuboid has six faces, and each face is a rectangle. These faces are arranged such that three pairs of opposite…

• ## Statistics | Material

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