Arithmetiles
From Eduwiki
Arithmetiles[1] is a free flash based game that helps students with fluency with operations on integers: addition, subtraction, multiplication and division.
Rules
The object of the game is to find the Discover Number by selecting two adjacent tiles that make up the secret equation using the integer operations. When you select a tile the game will give you a hint for what is needed to make up the secret equation. When two correct adjacent tiles are selected they turn green and then you can double click them to get point. Initially tiles are worth 50 points, and then increase in value as they are continually used. A timed game lasts two minutes and you must find a certain amount of equations. If you reach the required number of equations you go on to the next level.
For $14.95 you can become a Power Player and unlock the Power Player Trix.
Power Player Trix
Tile Shuffler: Mixes the tiles up
Tile Swapper: switches two tiles
Free Pass: skips Discover Number
Timer Control; Turns the timer on or off
The game will randomly unlock Trix for non-Power Players.
Screenshot
