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Learning by Doing

Objective: To reinforce the concept of fraction as an Operator ‘of’ by using square
grid.
Materials Required: Square grid papers and coloured pencils or sketch pens
Procedure:
• Make two 8 × 8 grids with 64 small squares.

Grid-A Grid-B
1 1
• Colour red of the grid A vertically and other of the grid A blue.
2 2

Since, the total number of small squares in grid A = 64, therefore,

1 1
2 of 64 small squares 2 × 64 = 32 small squares

So, in grid A, 32 small squares need to be coloured red and 32 small squares in blue
as shown below.

1
1
• Now, take grid B and colour of grid red and then next of grid blue. Repeat this pattern
4 4
on the other half of grid B as shown below.
1 1 1
Therefore, of grid B = of 64 small squares = × 64 = 16 small squares need to be
4 4 4
coloured red and then blue.

Grid-A Grid-B

Mathematics-7 52