When I was in junior high, my best science experiment was when I took it upon myself to figure out whose mouth was cleaner - a dog's or a human's. I got 1st place. It wasn't that complicated, I just had petri dishes filled with this gel stuff. I put Q-tips swiped with saliva in it and took pictures of them daily. You can find the recipes for the gel on the internet, but I don't know if it's up your alley. I also did one where I found out which nail polish lasted the longest of 5 different kinds. It was fun, I wore 5 different colors of nail polish to school for a week and just had to watch which brand came off first. I went all out for my board, too. lol.
Gahh. I hope this helped. The nail polish experiment was the easiest, so go for it if you want.
Past experiences ^^
· 1 decade ago