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E:\Working\Focus_Learning\Math_Genius_4_(25-10-2023)\Open_Files\Chap-03
\\December 6, 2023 1:25 PM Bharat Arora P-6 Reader _________________________ Date: ___________________74
Learning by Doing
Objective: To reinforce the concept of the distributive property of
multiplication over addition.
Materials required: Grid papers, some colourful bindis and a cello
tap.
procedure:
Divide the class into pairs and invite them one by one.
Tell the students to take grid papers.
Ask one student to put some red bindis to show 3 × 5 on a grid paper.
Ask the other student to put some green bindis to show 3 × 4 on a grid
paper.
Then tell the students to count the number of bindis put on the grid papers.
Student 1: 3 × 5 = 15 Student 2: 3 × 4 = 12
Total = 15 + 12 = 27
Now, ask them to join both grids by using cello tape as shown below and
observe the arrangement.
Count the total number of bindis.
3 × (5 + 4) = 3 × 9 = 27
Ask what they observe.
From the above presentation, we can see 3 × 5 + 3 × 4 = 3 × (5 + 4)
or 3 × (5 + 4) = 3 × 5 + 3 × 4 27 27
Repeat the above activity with different pairs till the time permits and also by
taking different numbers of columns and rows for the grid.
Mathematics-4 69

