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Which line is longer? C or D? Measure each line. How good is your guess?

Concept: undefined >> undefined
Guess whose tail is the longest. Now measure the tails. How good is your guess?






Concept: undefined >> undefined
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What is the length of a 100 rupee note? Guess. Now measure it using a scale.

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Now guess the length and width of many other things. Measure and find the difference between your measure and your guess.
| Size of | Your guess in cm | Your measure in cm | ||
| Length | Width | Length | Width | |
| 100 Rupee note | ||||
| 10 Rupee note | ||||
| 20 Rupee note | ||||
| 5 Rupee note | ||||
| Post card | ||||
| Math-Magic book | ||||
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Difference in size 
Do this for yourself and find the difference.
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What is Dinesh’s height in metres? _____ m _____ cm.
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Parth and Gini bought aam papad (dried mango slice) from a shop. Their pieces looked like these. Both could not make out whose piece was bigger.


- Suggest some ways to find out whose piece is bigger. Discuss
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Altogether how many squares can be arranged on it?
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So the area of piece A = ________ square cm
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In the same way, find the area of piece B.
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Who had the bigger piece? How much bigger?
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This stamp has an area of 4 square cm. Guess how many such stamps will cover this big rectangle.

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Measure the yellow rectangle. It is ________ cm long.
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How many stamps can be placed along its length?
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How wide is the rectangle? ________ cm
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How many stamps are needed to cover the rectangle?
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How close was your earlier guess? Discuss.
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What is the area of the rectangle? ________ square cm
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What is the perimeter of the rectangle? ________ cm
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Arbaz plans to tile his kitchen floor with green square tiles. Each side of the tile is 10 cm. His kitchen is 220 cm in length and 180 cm wide. How many tiles will he need?

Concept: undefined >> undefined
