Here is a lapbook for the human body. It is ideal for the younger classes. Scroll
past the "ads" at the top and each topic is another great printable resource. 30 to choose from. Most are directed at the little ones, but some work wonderfully for the older kids.
Human Body lapbook
Here is a site that offers many free, fun activites!
Go to Life Sciences and scroll down to Human Body, and you'll find a Body
Bingo. It has 3 levels of game play.
Human body games
There are a plethora of other subjects at this site. Don't just stop at this one...have fun!