Heh...
Good idea, somewhat good execution. My recommendation for doing a game like this is either spend more time on the art... or hire someone to do it for you. You should get some music in the background too. One thing I would really like to see in this game is making it so "enter" submits the answer instead of having to press enter... also, every new slide delete what you put in there the first place.
Overall, fun and interesting.