Page 161 - ICSE Math 1

Chapter 2: Addition up to 9

Take a bag and put objects like ice cream s cks or marbles in it. Form groups of
two or three children. Each child should pick out objects from the bag and prac ce
addi on using them.

Chapter 3: Subtraction up to 9

Make colourful number cards. Form groups of two. Each child should pick up a
number card in a group. Subtract the smaller number from the bigger number.
Write the diff erence obtained. Prac ce subtrac on by repea ng the ac vity with
diff erent number cards.

Chapter 4: Numbers from 10 to 20

Represent the numbers from 10 to 20 using ice cream s cks and toothpicks where
bundle of ice cream s cks represents tens and bundle of toothpicks represents
ones. For instance, we need 1 ice cream s ck and 3 toothpicks to represent number
13. Similarly, we need 2 ice cream s cks and 0 toothpick to represent number 20.

+ = 13

+ = 20

Chapter 5: Numbers from 21 to 99
Represent the numbers from 10 to 20 using bu ons of any two colours (say orange

and blue). Form groups of 2 to 3 children. Decide which colour bu ons represent
tens and ones. Let orange bu ons represent tens and blue bu ons represent
ones. One group will give a number to other group and ask them to represent the
number using the bu ons. Similarly, the other group will ask the next group.

Chapter 6: Addition and Subtraction up to 99

Make colourful number cards and form groups of two or three students. One
group will pick up any two cards having numbers less than 9. Add the numbers
obtained and fi nd the sum. Similarly, to fi nd the diff erence, pick up any two cards
and subtract the smaller number from the bigger number. All groups can prac se

addi on and subtrac on in this manner and will be marked according to the right
answers.

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