At the beginning of each year, I tell all my students that I will always treat them as adults (young as though they may be). I preach to them the importance of responsibility and respect. I let them know that because I respect them, I will be honest with them at all times. Lately, I must confess, I've been a little sneaky.
With a classroom full of computers, I consider myself one of the most fortunate teacher son campus. Students love to find something to play during any bit of free time I afford them. So here's my source of skulduggery. I've recently introduced them to a couple games that secretly teach them something. I know, I know. It's underhanded and goes against all the principles I teach them, but it's so fun to see them learn something and not even know it.
Exhibit #1
There is a
game that involves shooting darts at sheep (to tranquilize them not kill them...I'm not that sick). Students watch a flock of sheep on the left of the screen and as soon as they see one start to dart to the right, they click on a button to unleash a tranq dart and stun them.

Looks fun, right? After you sedate five rogue sheep, your score pops up to let you know how you've done. The score is listed as a decimal.
Ah ha! Here comes the learning. At first students thought 0.7 was worse than 1.2 (the first numbers is smaller after all), but soon they realized 0.7 was smaller and that 0.6 was smaller still. Soon they were talking trash about who could get lower than 0.721. When a student hit 0.701, there was no argument about who had the faster time! Not only do they learn about ordering decimals, but they also started to ask questions about how reactions and reflexes work. Warning: Play this with the sound down...unless you like bleats with your beats.

Exhibit #2
While reading a
math teacher's blog one day (I was bored, OK!?), I read about this game called
Auditorium. The secret of this game lies in its simplicity. There are no instructions to read. It's all based on your willingness to experiment. For the uninitiated, you either move or expand the circles around to redirect a stream of light till it hits the equalizer bars. This in turn starts creating music which rises in volume the more the light hits it. It's simple, but highly addictive. The soundtrack is nice too.

So what does this have to do with math? It's more about logic than math. It shows how to look at a goal, look at the pieces given and then leaves it up to the individual to make the connections (just like a proof).
But now I've just made you bored...go play the games! They're fun. Can you beat 0.1621 seconds? Can you make it past level 3.5? Only one student could best my reaction time, but none of them could pass me on auditorium.