You may also like

Tangrams

Can you make five differently sized squares from the tangram pieces?

Baked Bean Cans

Is there a best way to stack cans? What do different supermarkets do? How high can you safely stack the cans?

Three Squares

What is the greatest number of squares you can make by overlapping three squares?

Six to Four

Age 5 to 7 Challenge Level:

Move four sticks so there are exactly four triangles.

Sticks