...the second line on Homer's blackboard is perhaps the most interesting, as it contains the following equation:
3,98712 + 4,36512 = 4,47212
The equation appears to be innocuous at first sight, unless you know something about the history of mathematics, in which case you are about to smash up your slide rule in disgust. For Homer seems to have achieved the impossible and found a solution to the notorious mystery of Fermat's last theorem!
Screw learning about inverse trigonometric functions! Now you can play Portal in class, looking like you're hard at work!
A video was posted earlier about the game. The via link is to a download of the game. Note that you need TI Connect, and a TI-83 or 84 Plus calculator. Open the ReadMe files to see how to install it, and have fun for once in math class tomorrow!