Thanks for all the input about bones. Just sitting in plain water for a long time, till the bacteria are gone, then hydrogen peroxide. And no Bleach. What daya know! That'll do it. Thanks!
I just came across a site today. Please take a look at it and give me you opinions. I typically taught these "perspective drawing" type classes to 9th graders, not ages 9-14. What level would this be best in your humble opinions? http://www.geocities.com/~jlhagan/K9-14/introduction.htm