You may also like

problem icon

Geoboards

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

problem icon

Polydron

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

problem icon

Multilink Cubes

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

Sticks and Triangles

Stage: 2 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

I made some triangles out of sticks. The sticks are all the same length.

I can make a triangle out of three sticks:

triangle from 3 sticks


What about four sticks? Five sticks? Six sticks?

I can make two different triangles out of ten sticks:

two triangles from 10 sticks


Can you find any others?

What about triangles made from twenty sticks?

What about all the lengths in between?

Can you make any rules about the numbers of sticks that make the most triangles?