The following are the multiplication tables of 3, 4, 5 and 6. Read them aloud. 3 4 5 6 3×1=3 4×1=4 5×1=5 6×1=6 3×2=6 4×2=8 5 × 2 = 10 6 × 2 = 12 3×3=9 4 × 3 = 12 5 × 3 = 15 6 × 3 = 18 3 × 4 = 12 4 × 4 = 16 5 × 4 = 20 6 × 4 = 24 3 × 5 = 15 4 × 5 = 20 5 × 5 = 25 6 × 5 = 30 3 × 6 = 18 4 × 6 = 24 5 × 6 = 30 6 × 6 = 36 3 × 7 = 21 4 × 7 = 28 5 × 7 = 35 6 × 7 = 42 3 × 8 = 24 4 × 8 = 32 5 × 8 = 40 6 × 8 = 48 3 × 9 = 27 4 × 9 = 36 5 × 9 = 45 6 × 9 = 54 3 × 10 = 30 4 × 10 = 40 5 × 10 = 50 6 × 10 = 60 Application Let us solve some examples using the concept of skip counting. Example 8: Show the path the rabbit takes to reach the carrot by crossing the boxes using skip counting by 3. START 1 20 21 40 41 2 19 22 39 42 3 18 23 38 43 4 17 24 37 44 5 16 25 36 45 6 15 26 35 46 7 14 27 34 47 8 13 28 33 48 9 12 29 32 49 10 11 30 31 50 END Multiplication 27 NR_BGM_9789386663085 MAPLE G02 INTEGRATED TEXTBOOK TERM 2_Text.pdf 51 1/8/2019 9:10:31 AM
Solution: START 1 20 21 40 41 2 19 22 39 42 3 18 23 38 43 END 4 17 24 37 44 5 16 25 36 45 6 15 26 35 46 7 14 27 34 47 8 13 28 33 48 9 12 29 32 49 10 11 30 31 50 Example 9: Radha counts the balloons using skip counting by 8. Write the numbers in the boxes. How many balloons are there altogether? Solution: 8 16 24 32 40 48 56 There are 56 balloons altogether. 28 1/8/2019 9:10:31 AM NR_BGM_9789386663085 MAPLE G02 INTEGRATED TEXTBOOK TERM 2_Text.pdf 52
Higher Order Thinking Skills (H.O.T.S.) Let us see another example of skip counting. Example 10: Complete the wheel of skip counting by 3 and 5. Solution: We can skip count by 3 and 5. Drill Time Multiplication 29 Concept 8.1: Concept of Repeated Addition 1/8/2019 9:10:31 AM 1) Count and add: a) b) NR_BGM_9789386663085 MAPLE G02 INTEGRATED TEXTBOOK TERM 2_Text.pdf 53
c) d) 2) Word problems a) S eeta observed that there were 4 cars parked in a row. How many wheels could she count on the cars? b) A farm had 6 hens. How many legs do they have in all? Concept 8.2: Skip Counting 3) Skip count and fill in the blanks. a) Skip count by 2 8 2 30 1/8/2019 9:10:31 AM NR_BGM_9789386663085 MAPLE G02 INTEGRATED TEXTBOOK TERM 2_Text.pdf 54
b) Skip count by 3 15 3 c) Skip count by 4 4 24 d) Skip count by 5 5 45 4) Word problems a) H arry counts some flowers using skip counting by 5. How many flowers does he count altogether? b) S aket counts sheep using skip counting by 4. How many sheep does he count altogether? Multiplication 31 NR_BGM_9789386663085 MAPLE G02 INTEGRATED TEXTBOOK TERM 2_Text.pdf 55 1/8/2019 9:10:31 AM
Class Look and Learn Contents 2 9 Dear Drops............................... Neighbourhood and Community at Large��� 1 1 0 Game of Lights.. ....................... Science and Technology�������������������������������� 5 1 1 Air Around Us........................... Science and Technology�������������������������������� 9 1 2 Uses of Plants........................... Science and Technology������������������������������ 13 NR_BGM_9789386663085 MAPLE G02 INTEGRATED TEXTBOOK TERM 2_Text.pdf 56 1/8/2019 9:10:31 AM
Lesson Dear Drops 9 Let Us Learn About R the use of water for living things. U the importance of water. A the wastage and shortage of water. H how the need for water differs in plants and animals. Think Look at the given picture. Many animals have come to drink the water here. Do you think everyone will drink the same amount of water? Remembering All living things, be it plants or animals, need water to live. We know that the water we use every day is freshwater. We use this water for drinking and cooking. We also need water for bathing, washing clothes, cleaning and so on. NR_BGM_9789386663085 MAPLE G02 INTEGRATED TEXTBOOK TERM 2_Text.pdf 57 1 1/8/2019 9:10:31 AM
drinking cooking bathing brushing teeth cleaning vessels mopping the floor washing clothes We also need water to grow the plants in our gardens and fields. Plants and animals also need water. Plants need water for making food. Animals need water for drinking and bathing. Some plants and animals can only live in water. watering garden plants animals need water some plants and to drink and bathe animals live in water Understanding We have seen that all living things need water. What will happen if there is no water? Let us find out. 2 1/8/2019 9:10:31 AM NR_BGM_9789386663085 MAPLE G02 INTEGRATED TEXTBOOK TERM 2_Text.pdf 58
If plants do not get water, they will start drying. If they do not get water for many days, they will dry and die. What happens if we don’t get water to drink? We will feel thirsty. We will feel tired. If we don’t drink water for a longer time, we may fall ill. We need to keep ourselves clean by taking a bath. If there plant without water is no water, we cannot take a bath. We may become sick because of germs. Animals also need water. If they do not get water to drink they too will become sick. feeling thirsty Application Water is important. So, we should not waste water. What do you do with the leftover water in your water bottles? Do you throw it away? We should use leftover water in our bottles to wash hands or water plants. We all get water from rain. What happens if there is wastage of water little rain? There will be less water. When we do not get enough water for our use, we have a shortage of water. Sometimes, due to the absence of rain for a longer time, a place may become completely dry. There will be no water available. This is called a drought. During drought a drought, the land dries and cracks appear. Plants dry up as they do not get water. Animals die as they get nothing to eat or drink. Amazing Facts If our bodies do not get enough water, our memories may be affected. Then we may find it difficult to remember things properly. Dear Drops 3 NR_BGM_9789386663085 MAPLE G02 INTEGRATED TEXTBOOK TERM 2_Text.pdf 59 1/8/2019 9:10:31 AM
Higher Order Thinking Skills (H.O.T.S.) The need for water is not the same for all living things. Some animals and plants need more water than others. Some can live with little or no water. Let us see some examples. • K angaroo rats do not need to drink water. They live in dry and hot places. They save the water that they get from their food(seeds). • Camels need less water than other animals. They drink large amounts of water at a time. Then they can go for a long time without water. kangaroo rat camel • Elephants require a lot of water to drink. They also require water to bathe and cool their bodies. • P lants like the cactus grow elephant cactus in dry areas and need less water to grow than other plants. Have you noticed that small plants dry out quickly? Find out the reason behind it. The need for water depends on the size of the body and types of activities done. Big animals and trees may need more water. We may drink more water after playing outdoors. If we sit idle, we may not feel thirsty. The need for water also depends on the climate and season. For example, plants and animals need more water in the summer than in winter. In summer, we feel thirsty more often. 4 NR_BGM_9789386663085 MAPLE G02 INTEGRATED TEXTBOOK TERM 2_Text.pdf 60 1/8/2019 9:10:32 AM
Lesson Game of Lights 10 Let Us Learn About R shadows. U shadow formation. A changes in shadows formed by sunlight. H uses of objects based on the amount of light passing through them. Think Look at the picture. The boy in the picture is Ali. He likes to make various shapes on the walls in front of the light. Have you ever tried it? Remembering When we stand out in the Sun, we can see a dark shape on the ground. It looks similar to us. It moves as we move. Do you know what it is? It is called a shadow. shadows formed due to sunlight NR_BGM_9789386663085 MAPLE G02 INTEGRATED TEXTBOOK TERM 2_Text.pdf 61 5 1/8/2019 9:10:32 AM
A shadow is a dark shape formed when an object blocks the path of light. Not all objects form shadows. Let us see which objects form shadows and which do not. Some objects allow light to pass through objects that allow light them. They do not block the light. So, they to pass through them do not form shadows. We can see through these objects. For example, glass and water. Some objects allow only some light to pass through them. They form shadows, but the shadows are not very dark. We cannot see through these objects properly. objects that allow only some light to pass through them Some objects do not allow light to pass through them at all. These objects form dark shadows. We cannot see through these objects at all. For example, your body does not allow light to pass through it. It forms a shadow when light falls on it. We cannot see through our bodies. Other examples are the walls of our houses, a blackboard and so on. objects that do not allow light to pass through them Some objects can throw back all a mirror the light which falls on them. throws back For example, a mirror throws all the light back the light. 1/8/2019 9:10:32 AM 6 NR_BGM_9789386663085 MAPLE G02 INTEGRATED TEXTBOOK TERM 2_Text.pdf 62
Understanding We have seen that a shadow is formed when an object blocks the path of light. Have you ever noticed the path of light? It is a straight line. Shadows are always formed opposite to the source of light. straight path of light If you stand outdoor in the Sun, on which side is your shadow formed? It is on the side opposite to the Sun. If the Sun is on our left, the shadow will be on our right side. If the Sun is in front of us, our shadow is formed behind us. If it is above us, our shadow will be below us. shadows are formed opposite to the source What do we feel when we stand in of light the shadow of a tree or a building? We feel cool. Are the shadows formed always of the same sizes as that shadows are cool of the objects? No. They appear in different sizes. What is the reason for this? If the object is close to the light source, the shadow formed is of a bigger size. As the object moves away from the light source, the shadow becomes smaller. different shadows of the same object Application Have you seen your shadow in the mornings? What does it look like? The shadow is long. Have you seen your shadow at noon? What do you find? The shadow is short. Have you seen your shadow in the evenings? The shadow is longer. Game of Lights 7 NR_BGM_9789386663085 MAPLE G02 INTEGRATED TEXTBOOK TERM 2_Text.pdf 63 1/8/2019 9:10:32 AM
What happens after sunset? Our shadow disappears after sunset, as there is no sunlight. shadows formed by sunlight Amazing Facts Storytelling using shadow puppets started thousands of shadow puppetry years ago. In this, the characters of the story are placed between the light and the screen. This forms the shadows on the screen. Higher Order Thinking Skills (H.O.T.S.) Can you guess why we use glass panes to make windows? Why are our spectacles made of glass? We need to see through these objects. Glass does not block light. So we can see through it. What will happen if we use glass panes to make the walls of our glass windows help us see through house? Everything in our house will be seen from the outside. So, we use wood, bricks and stones to walls of the house make walls. They do not let light pass do not let us see through them. Hence, we are unable through to see through the walls of houses. Why do we use sunglasses when we go out in the Sun? sunglasses protect our Sunglasses let only some of the sunlight pass through eyes from the bright them. Thus, we are protected from bright sunlight. light 8 1/8/2019 9:10:32 AM NR_BGM_9789386663085 MAPLE G02 INTEGRATED TEXTBOOK TERM 2_Text.pdf 64
Lesson Air Around Us 11 Let Us Learn About R the air around us. U moving air. a the uses of air. H warm and cool air. Think We breathe air that is around us. Can we see air? Why do you think air is important for us? Remembering Air is all around us. It is like a big blanket that surrounds us. But we cannot see it. We can only feel it. Air has no smell, shape and colour. It does not stay in one place. It moves from one place to another. Let us learn some more things about air. NR_BGM_9789386663085 MAPLE G02 INTEGRATED TEXTBOOK TERM 2_Text.pdf 65 9 1/8/2019 9:10:32 AM
1) Air has weight: Fill two balloons with air, and tie them on a hanger. Remove air from one balloon. The other balloon drops down. This shows that air has weight. two balloons filled with air air is removed from one balloon 2) Air fills up space: Anything that has weight fills up space. As air has weight, it fills up space too. When we blow air into a balloon, it gets bigger in a boy filling up a balloon size. This shows that air needs space. Understanding THE MOVING AIR When we fly a kite, why does it move? Why does a pinwheel spin? These happen due to moving air. Moving air is called the wind. A gentle or a slow wind is called a breeze. All of us enjoy a cool breeze. a girl flying a kite a spinning When the wind is strong and blows very pinwheel fast, we call it a storm. Storms can cause damage to trees and houses. There are different types of storms. • Some storms bring in heavy rain, lightning and thunder. They are called thunderstorms. • Some storms carry dust with them. These storms are called dust storms. • The storms that carry sand are called sand storms. • Storms that bring snowfall are called snow storms. a thunderstorm 10 NR_BGM_9789386663085 MAPLE G02 INTEGRATED TEXTBOOK TERM 2_Text.pdf 66 1/8/2019 9:10:32 AM
a dust storm a sand storm a snow storm Application You have learnt about the different forms of moving air. Now, let us learn how air is useful to us. USES OF AIR 1) All living things need air to breathe. 2) We also need air for burning candle goes out when things. For example, when a covered with a glass burning candle is covered with breathing in air a glass, it blows out after some time. This happens because there is no air left inside the glass to keep the candle burning. 3) Air gives shape to things. tyre, balloon and football filled with air Things like tyres, balloons and footballs get their shapes only after we fill them with air. 4) Air helps the clothes to dry faster. 5) Air helps boats to sail. clothes hung out to dry sailing boat Air Around Us 11 NR_BGM_9789386663085 MAPLE G02 INTEGRATED TEXTBOOK TERM 2_Text.pdf 67 1/8/2019 9:10:32 AM
Amazing Facts Air is lighter than water. Things filled with air float on water. That is why swimming tubes help us to float on water. Higher Order Thinking Skills (H.O.T.S.) When the air becomes warm, it becomes light in weight. So, it moves up. If we burn some dry leaves, we can see small things get blown up in the air. Due to the fire, the air becomes warm and moves upward. It carries the small pieces of burnt leaves up. Warm air moves faster than cold air. Let us do one activity. fire You should take the help of your teacher or parents to do this. Put a balloon on the neck of a bottle. Keep the bottle in a pan of boiling water. What do we see? The balloon increases in size. What will happen if we keep the bottle in a pan of cold water? There is no change in the size of the balloon. Warm air takes more space than cold air. 12 1/8/2019 9:10:32 AM NR_BGM_9789386663085 MAPLE G02 INTEGRATED TEXTBOOK TERM 2_Text.pdf 68
Lesson Uses of Plants 12 Let Us Learn About R the things we get from plants. U useful plant parts. A plant products. H the uses of the coconut tree. Think You find sugar, spices, flour, dal, oil and rice in the kitchen. Where do all these things come from? Remembering We have already learnt about the parts of a plant. Let us learn about the different things that we get from plants. vegetables tea fruits coffee oil sugar spices chocolate NR_BGM_9789386663085 MAPLE G02 INTEGRATED TEXTBOOK TERM 2_Text.pdf 69 13 1/8/2019 9:10:32 AM
perfumes soaps medicines paper tables and chairs garlands others Understanding The different parts of plants are useful to us in many ways. We use roots, stems, leaves, flowers or fruits of plants. The cereals and pulses that we eat are the seeds of some plants. Example: various dals, rajma and so on. Roots we eat Stems we eat Leaves we eat beetroot carrot potato onion spinach lettuce Flowers we eat Fruits we eat Seeds we eat broccoli cauliflower mango banana pulses We get spices like cloves and pepper from plants. They make our food tasty. We get oil from the seeds of plants like the sunflower. oil from sunflower seeds pepper clove 14 1/8/2019 9:10:32 AM NR_BGM_9789386663085 MAPLE G02 INTEGRATED TEXTBOOK TERM 2_Text.pdf 70
We get tea, coffee and cocoa from the leaves or seeds of plants. tea leaves tea coffee beans coffee We get sugar from sugar cane. Cocoa beans are used to make delicious chocolates. sugar cane sugar cocoa beans chocolate We get perfumes from the stems or flowers of plants like jasmine. We also use flowers to make beautiful garlands. jasmine perfume rose garlands Plants like the neem and amla are used to prepare medicines. neem amla medicine Tree trunks give us wood for making tables, chairs, spoons, paper and so on. We get rubber from plants. Ropes and cloth are also made from plants. table and chairs tree trunk paper Uses of Plants 15 NR_BGM_9789386663085 MAPLE G02 INTEGRATED TEXTBOOK TERM 2_Text.pdf 71 1/8/2019 9:10:32 AM
Application We have seen how parts of plants are useful to us. Let us see how some plant products are made using such plant parts. 1) Let us see how chocolate is made from cocoa beans. cocoa cocoa add sugar, hot mix well chocolate beans powder water, butter and jute bags milk 2) We can make prints on clothes using plant colours. Some vegetables like carrot, beetroot and spinach are used to make colours. 3) Jute bags are made from plants. vegetable prints They can be used in place of on clothes plastic bags. Amazing Facts Did you know a real chocolate river was made using water, chocolate and cream, for the movie Willy Wonka and the Chocolate Factory? It started smelling after a few days! Higher Order Thinking Skills (H.O.T.S.) Some plants have many uses. Different parts may be used in different ways. Find out the uses of a coconut tree. Make a list of things you can make using its parts. 16 1/8/2019 9:10:33 AM NR_BGM_9789386663085 MAPLE G02 INTEGRATED TEXTBOOK TERM 2_Text.pdf 72
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