🎯 Learning outcomes
- Collect simple data by counting and tallying
- Read a picture graph
- Answer questions such as which is most and how many more
Before you start: Counting and comparing numbers.
📖 Explanation
Data is information we collect, such as the favourite fruits of children in a class. We can count with tally marks: each stroke is one, and every fifth stroke crosses four.
A picture graph uses pictures to show the data. Each picture stands for a number of things.
From a graph we can tell which is the most, which is the least, and how many more one is than another.
A Class 2 in Kolkata recorded how children come to school: 8 walk, 12 by bus, 5 by cycle and 3 by car.
✗ In a picture graph each picture always means one
✓ Read the key: one picture may stand for 2, 5 or 10 things.
🧪 Try this activity
Ask 10 friends their favourite colour, make tally marks and draw a picture graph with one star for each friend.
✍️ Question bank with answers
Tap an option to check multiple-choice answers. Open “Answer” or “Marking points” for the others.
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In tally marks, a bundle with a cross line stands for
Answer
D. 5
Four strokes and a crossing stroke make 5.
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If one picture of a mango stands for 2 mangoes, 4 pictures stand for
Answer
C. 8
4 pictures × 2 = 8 mangoes.
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In the school travel example, which way do most children come?
Answer
B. by bus
12 by bus is the largest number.
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How many tally marks show 7?
Answer
one bundle of 5 and 2 strokes
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In the travel example, how many more come by bus than walk?
Answer
12 − 8 = 4
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Why do we use a key in a picture graph?
Marking points
- It tells how many each picture stands for
- So we read the numbers correctly
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Collect data on the weather for one week (sunny, cloudy, rainy) and draw a picture graph. Write two things you learn.
Marking points
- Correct tally for 7 days
- Picture graph with key
- Two correct statements such as most days were sunny
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A fruit seller sold 6 apples, 10 bananas and 4 oranges. Which should he stock more of and why?
Answer
- Bananas
- They sold the most
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Draw a picture graph for: red 3, blue 5, green 2 with one circle for one child.
Answer
- Three rows of circles with correct counts
- A key showing one circle = one child
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