Awesome Hunt! When I was a kid there weren't such great ready-made tools/toys out of the box. We had to create/improvise them. Air+Water Power saves that time and allows kids to focus more on the physics side and let them experiment.

There are 15 experiments with 165 pieces. Een the asembling will provide a good challenge for 8 year olds (but not for adults) There is a 44 page manual and it's all sold for very fair $49.95 price.