My youngest son is working through Apologia Botany this year.  The following pictures show an experiment he was working on. 

He was trying to find out if a Sumara or Dandelion tuft would travel farther.

Yes, we have been known to do school still in our pajamas!

Recording the results!

If you are looking for a science curriculum for your kids I really recommend Apologia.  They have books for elementary up to high school.  Both of my kids really enjoy these books.