A really really cool interactive game to practise number properties. Thirty particles fall from above. Use the repelling particle to nudge them into the correct box depending on whether they contain a square number or a prime number.

An interactive whiteboard game to practise number properties. Thirty particles fall from above. Use the repelling particle to nudge them into the correct box depending on whether they contain a square number or a prime number.

Three thumbs up!

Instructions
http://www.teacherled.com/2008/09/02/particle-maths/

Resource
http://www.teacherled.com/resources/particle/particleload.html