By Ariel Marcy, 9 August 2023
Harness a powerful simple machine to launch some tasty treats. Safety: When dealing with food, use clean hands and clean equipment. Be careful with your catapult and make sure no one is standing where you’re aiming it.
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By David Shaw, 17 March 2022
Rulers are great at measuring straight lines, but how do you measure a curvy line? Here’s one way, using a wonderfully messy diagram!
By David Shaw, 28 April 2021
NASA’s Ingenuity helicopter has made history by flying on Mars. To celebrate the first flight of a copter on another planet, here’s a simple unpowered helicopter you can build at home!
By David Shaw, 17 October 2019
Drop the ruler, watch for the jump… that’s the point of drop jump! Can you work out which matchbox tray the coin will fall into?
By David Shaw, 6 November 2015
This simple pattern reveals a heart from a circle and a lot of straight lines!