List

Being resilient - Primary geometry

problem

Four triangles puzzle

Age
5 to 11
Challenge level
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Cut four triangles from a square as shown in the picture. How many different shapes can you make by fitting the four triangles back together?

Inside Triangles
problem

Inside triangles

Age
5 to 7
Challenge level
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How many different triangles can you draw which each have one dot in the middle?

Estimating angles
game
Favourite

Estimating angles

Age
7 to 14
Challenge level
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How good are you at estimating angles?

Nine-Pin Triangles
problem

Nine-pin triangles

Age
7 to 11
Challenge level
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How many different triangles can you make on a circular pegboard that has nine pegs?