You have to fill in the missing numbers in the equations to stop Harvey being catapulted into the distance. Simply click on a number to select it.

There are four ropes holding the catapult down, so you've got four chances. You'll see the ropes snap if you choose a wrong number.

From some problems, even at level one, this game at times requires logical reasoning and good number skills. Or luck. I really love this game, but it is better I think for students who already have good number skills.

Notes:
* You will need the Shockwave plug-in for this game. It is available from the website.

http://www.channel4learning.net/sites/puzzlemaths/catapult.shtml