Don't ask how I found this (not sure myself!), I came upon this Lumosity brain training site which has several good games which pupils may be able to use, the raindrops link below takes you straight to one of the best games...Raindrops believe it or not... To access all the games you do have to pay, but I have registered myself and can get access to some of the stuff on there without paying.
Thanks, Denise
Click on http://www.lumosity.com/brain-games/problem-solving-games/raindrops
