Table reading & permutations

This activity is a primer for being able to read tables. I have planned a few activities where we will do addition and multiplication tables. The activity was taken from Math from Three to Seven.

Task 1

Supplies/Preparation: You will need 16 cut-out shapes and can enlist your child to help with the preparation 
- 4 squares, one in each of these colors: red, yellow, green, blue
- 4 circles, one in each of these colors: red, yellow, green, blue
- 4 triangles, one in each of these colors: red, yellow, green, blue 
- 4 semicircles, one in each of these colors: red, yellow, green, blue

What to do: Draw a 4x4 table (each cell should be big enough to fit one of the cut-out shape) with rows labeled by shapes (square, triangles, circles, semicircles) and the column labeled with colors. Ask your child to put each object into the right cell. 

Task 2

What to do: Arrange different sequences made of triangle, square, circle (i.e. construct permutations) and record on a sheet of paper the number of different ones. 
Repeat with four shapes. 

A riddle

A boy has as many sisters as brothers, but each sister has only half as many sisters as brothers. How many brothers and sisters are there in the family?

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