Do you have a Science Fair at your school? We have a school wide fair every year. Each classroom completes a project together and all of the students are invited to create an individual project. Since I always have a class full of boys (10:2), we usually focus on something destructive. This year, we created 3 different buildings; a three sided, four sided, and five sided building. Then we measured how much weight (stack of books) each building could hold. It was a lot of fun and the kids really enjoyed working on it. The best part, we won 1st place in the 3rd-5th grade class division! My kids were so excited. They don't often get to shine against their non-disabled peers so they were beaming all day.