I am totally addicted to this game right now thanks to Dan Meyer. Who cares that it’s probably designed for 4th graders! I like how the creators of the game explicitly state that the game is not a lesson in fractions, but rather requires knowledge of fractions. I think this game would make a great starting inquiry into fraction concepts. Students can play the game and later reflect and induce some fraction rules. That and it’s just fun!
You can visit the official page here: http://games.cs.washington.edu/Refraction/
Or, just PLAY THE GAME!
You can check out their other games here: http://games.cs.washington.edu/site/games