Example 5: ook at these ob ects. Write 5 for the lightest and 1 for the heaviest. Solution: 23145 Example 6: Compare the following ob ects. Write numbers 1, 2, , and 5 in the boxes below them. Write 1 for the lightest and 5 for the heaviest. ne is been done for you. a) 1325 4 b) Measurements 47
c) d) e) Train My Brain Compare the following objects and write numbers 1, 2, 3, 4 and 5 in the boxes below them. Write 1 for the lightest and 5 for the heaviest. a) b) 48
8.2 I Apply We compare the weights of ob ects using a simple balance. The pan of the simple balance with the heavier ob ect goes down. The pans are balanced if the ob ects on them are of the same weight. An orange is heavier A watermelon is lighter Both the bottles are of than a banana. than footballs. the same weight. Example 7: ook at the ob ects on the simple balance. Tick the heavier ob ect and cross the lighter one. ne is done for you. Simple balance Objects Measurements 49
Simple balance Objects 50
Example 8: Compare the weights of these ob ects. ne is done for you. a) 1 b) c) d) Measurements 51
e) 8.2 I Explore (H.O.T.S.) ook at these containers of different si es. They have different heights and weights. They hold different amounts of water, milk or oil. A bigger container can hold more water than a smaller one. Example 9: Tick the ob ect that can hold more water. ne is done for you. a) b) 52
c) Maths Munchies 213 The Egyptians came up with a few units to be more accurate in measuring different lengths. For example, 1 cubit is nearly equal to 2 hand spans. 1 foot is nearly equal to one and a half of your hand span. Connect the Dots English Fun PAC E ED T B Y I iven below are pictures of non-standard T EDBDB UG units of length. Identify and circle them in the word search pu le. ne is done for AAC S F KCAUG you. L A U PGD N LW W BRBPF T RP I ER E MW I L T AAY L AR T T A E CN LDJ E EYD DDX E YD W E G E X E Y I WQ AND S PAN Measurements 53
EVS Fun The smallest and lightest bird in the world is the hummingbird’. Drill Time Concept 8.1: Measure Short Lengths Using Non-Standard Units 1) Long and short ook at the picture given and answer the following questions. (A) (B) (C) a) Which pencil is the longest b) Which pencil is the shortest c) Which pencil is of medium length 2) Measure lengths using non-standard units. ani measures the lengths of some ob ects with her hand-span. Their measurements are as given below. Table 12 hand spans Window hand spans Bed 1 hand spans Notebook 2 hand spans 54
Drill Time Based on the given information, answer the following questions: a) Which ob ect has the maximum length b) Which ob ect measures the least in length c) Which ob ect is longer: the table or the bed d) Which ob ect is shorter: the window or the notebook 3) Measure the length using the given smaller objects. a) b) c) d) Measurements 55
Drill Time Concept 8.2: Compare Heavy and Light Objects 4) Observe the given picture and answer the following questions. white ball football balloon lled with air a) Which out of the three weighs is the heaviest b) Which out of the three is the lightest A Note to Parent Measure and record the measurements of a dining table, seat of chair and sofa with your hand span as well as cubit. ecord the measurements taken by you and your child in different columns. Compare them to show the difference between the si es of your and their hand. 56
Chapter Data Handling 9 I Will Learn About the terms data’ and collection’. interpreting data. Concept 9.1: Collect, Represent and Interpret Data I Think Bantei has a collection of different toys. e knows the total number. e wants to know how many toys he has of each type. ow can Bantei nd this out? 57
9.1 I Recall We have learnt how to count the number of ob ects. et us recall the same. bserve the given animals on the farm and answer the questions. a) Count the number of sheep. b) ow many butter ies can you see c) ow many ducks can you count d) Count the number of dog(s). 58
9.1 I Remember and Understand et us learn to identify a collection Collection: A group of similar type and form its data. of items or ob ects taken together is called a collection. Example 1: ere are a few collections of Data: A collection of facts, such as ob ects. Name them. numbers, words, measurements and so on is called data. ne is done for you. A collection of A collection of A collection of pencils _________________ _________________ A collection of A collection of A collection of __________________ __________________ _________________ Data Handling 59
Now let us see the following example. Example 2: bserve the collection of balls and answer the questions. a) ow many balls are there altogether b) ow many balls are orange in colour c) ow many balls are blue in colour d) ow many green balls are there e) Which coloured ball is one in number Solution: a) Total number of balls is 11. b) There are 2 orange balls. c) There are blue balls. d) There are 5 green balls. e) ink From a collection, we get some data. From this data, we get some information. Train My Brain b) c) a) This is a collection of This is a collection of This is a collection of ___________________ ___________________ ___________________ 60
9.1 I Apply We collect data to get some information from it. et us see a few examples of data collection. Example 3: adha went to a vegetable market. She bought the vegetables shown on the right. Make collections of each type of vegetable. Solution: The collections of each type of vegetable are: Vegetable Collection No. of vegetables 10 5 Example 4: avi kept some pencils, erasers Eraser Solution: and sharpeners in a box. Make collections of each type of item. Eraser The collections of each type of Eraser Eraser item are: Data Handling 61
Item Collection No. of items 4 5 Eraser 4 Eraser Eraser Eraser Eraser 9.1 I Explore (H.O.T.S.) Now, let us see another example. Example 5: bserve the collection of birds in a oo. Make collections of each type of bird. Answer the questions that follow. a) ow many birds of each type are there b) Which two birds are equal in number c) Which bird is the maximum in number d) Which bird is the minimum in number e) What is the total number of peacocks and parrots f) Which bird is more in number, hen or owl 62
Solution: a) Number of birds of each type are as given below. Bird Collection Number of Birds arrot 7 eacock 2 6 en 2 Duck 1 igeon 4 Crow Data Handling 63
Bird Collection Number of Birds wl 1 Sparrow b) eacock and duck pigeon and sparrow c) arrot d) igeon and sparrow e) f) en Maths Munchies In a data, a type of ob ect may repeat many times. We draw as 213 many lines as the number of times it repeats. For example: There are 10 apples and mangoes in a basket. It also contains bananas, 1 pineapple and 2 guavas. epresenting all these in picture form will take time. Make it easy by drawing as many lines as the number of each type of fruit. Apples | Mangoes Bananas ineapple uavas Counting the ob ects becomes easier by drawing these lines. ou can also group the lines in bundles of ve for quicker addition. This is useful if the number of ob ects is large. 64
Connect the Dots EVS Fun There are special names for the collections of a few things. For example, a) A collection or a group of lions is called a pride’. b) A collection or a group of birds is called a ÁRFN’. c) A collection or a group of honey bees is called a swarm’. English Fun Count the number of letters in the following words. Make collection of words based on the number of letters in each word. ( int: ow many three-letter words are there ow many four-letter words are there ) CAT ANIMA F D NKE CA T BAT MAN E M SMI E AN Number of letters (Collection) in the word Number of words 4 5 6 Data Handling 65
Drill Time Concept 9.1: Collect, Represent and Interpret Data 1) What collections do these pictures show? a) b) c) d) 2) Observe the picture and answer the following. a) ow many butter ies are there altogether 66
Drill Time b) ow many orange butter ies are there c) ow many blue butter ies are there d) Which colour butter y is the maximum in number e) Which colour butter y is the minimum in number 3) Observe the collection given. Make collections of each type of fruit and answer the questions that follow. a) ow many fruits of each type are there b) Which fruit is the maximum in number c) Which fruit is the minimum in number d) What is the total number of bananas and strawberries e) What is the total number of apples and pineapples f) What is the difference between the number of strawberries and apples Data Handling 67
A Note to Parent Ask your child to count the number of aunts, uncles and cousins he or she has. Ask him or her to make a list and write the total for each group in his or her notebook. 68
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