If your looking to while away some time, here are some links to some great little games mostly heli related.
In this game you have to control a Sea King rescue helicopter and winchman to rescue stranded and injured mountaineers and some wildlife, this is quite a tricky game.
Similar sort of idea to the Rockface game but the graphics are a lot better.
This is my personal favorite, you have to control a little space ship against the forces of gravity around a small planet carrying out various tasks, can be a little tricky but good fun.
Nothing at all to do with learning, I think flick the paper into the bin is more apt if a bit long, a good way to waste some time.
If you like a good mind bender this is the one for you, you have to reflect or refract a laser beam to complete the puzzle sounds easy? starts easy but before you know it you will be scratching your head.
Another little brain teaser for you, negotiate your white ball through the labyrinth to get it in the red goal, this will get your grey matter working.