Do you have any good science project ideas for a 7th grader?

i need science project ideas about growing bacteria, growing plants, animal behavior, or testing people?

can someone give me some science project ideas relating to growing plants?

For My Science Fair Project I will be choosing, "What different materials can you use to make plastic?" is this a good expirement to do for a 7th grader? If not how can I make this project seem like it's for a 7th grader? Also my science teacher...

Does anyone have some good science project ideas about bateria for a 7th grader that is original and not over used?? Please help!!!!

My daughter is looking for ideas for her science project and we have found some sites, but nothing that looks like an A project. Any suggestion would be appreciated.

i need ideas for my science project. no too hard, not too easy. i need projects that are not demonstrations. i need the ones that have like trial 1, trial 2, etc. physics, biology, botony which ever is good for me. and tell me how to do it in case i...

So, I'm building a science machine (it's called a Rube Goldberg) for those who know what that is. Anyways, I'm in 7th grade, so it's very simple. (There's a marble run, the marble goes on it, and it has to knock down a cup of water into a bowl. I just...