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Four Triangles Puzzle

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?

Two by One

An activity making various patterns with 2 x 1 rectangular tiles.

Playground Snapshot

The image in this problem is part of a piece of equipment found in the playground of a school. How would you describe it to someone over the phone?

Overlapping Circles

Age 7 to 11 Challenge Level:

What shaped overlaps can you make with two same-sized circles?

What shapes are 'left over'?

Overlapping Circles

What shapes can you make when the circles are different sizes?

What happens when you use more than two circles?