Get out some matchsticks or toothpicks and some Play-Doh! Deane Hutton, science educator and co-host of Australia’s The Curiosity Show, sets up two challenges that requires some hands-on creative thinking:

1. How do you make four triangles with six matchsticks?
2. How do you make seven triangles with nine matchsticks?

For the video above, hit pause at 30 seconds to solve the first challenge on your own, and then try this will power-building third challenge: Don’t watch the video below until you’ve solved the second challenge!

The Curiosity Show celebrated science, technology and things to make and do from 1972-1990, and now shares clips on their YouTube channel for today’s generation of viewers.

Watch more videos about triangles and other shapes, or watch another clip with Deane: How does a music box work?