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Investigate the number of faces you can see when you arrange three cubes in different ways.

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Let's Investigate Triangles

Vincent and Tara are making triangles with the class construction set. They have a pile of strips of different lengths. How many different triangles can they make?

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Colouring Triangles

Explore ways of colouring this set of triangles. Can you make symmetrical patterns?

Hundred Square

Stage: 1 Challenge Level: Challenge Level:2 Challenge Level:2

A hundred square has been printed on both sides of a piece of paper. One square is directly behind the other.

What is on the back of $100$? $58$? $23$? $19$?

Can you see a pattern?


Click here for a poster of this problem.

This problem is also available in French: Grille de 100