### Geoboards

This practical challenge invites you to investigate the different squares you can make on a square geoboard or pegboard.

### Polydron

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

If you had 36 cubes, what different cuboids could you make?

# Page Numbers

##### Stage: 2 Short Challenge Level:

Exactly $195$ digits have been used to number the pages in a book.

How many pages does the book have?