### Tangrams

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

### Polydron

This activity investigates how you might make squares and pentominoes from Polydron.

### Tiles on a Patio

How many ways can you find of tiling the square patio, using square tiles of different sizes?

# Geoboards

##### Age 7 to 11Challenge Level

 On a $4$ by $4$ geoboard (say) - how many different sized squares can you make using rubber bands? How could you make a square with NO pins along a side (an edge) and just the 4 pins at the corners (vertices)? The basic unit of measurement is one square unit (as shaded in the diagram). How can you make a square whose area is 2 square units? Can you make a square with an area of 3 square units?

Here is an interactive you might like to use.