Thanks Dbat. That's funny about the maple syrup, etc. My kids probably would have done that if I had left it completely to their own devices. It would have been ugly.
The school was pretty clear that they expected parental involvement and what it should look like, with a hypothesis, data tables, conclusion, etc. No way would early elem. be able to do something like that on their own. It was not judged and there were no prizes, but there were designated adults going around asking the kids about their projects. I wasn't there but DD said she talked to the principal and her science teacher and her science teacher took a picture of her with her poster board. Someone asked her why nothing was over 1 and she was able to say the hypothesis about the screw (thanks to this thread and me explaining it to her).