A more complicated lesson idea (for Middle School) - would be a
retablo/shrine box with a Calaveras. The Skeleton could be done with
shrink plastic. Lesson for making the shrink plastic skeleton is no
longer online.
Skeleton Template now is only available to site members of Enchanted Learning:
http://www.enchantedlearning.com/crafts/halloween/bones/template.shtml
For middle school, I recommend you get some diagrams of skeletons (or
better yet, a skeleton model) and have the students draw their own
parts. You could do it as a lesson in figure proportion.
If anyone does one of these lessons, send images to me to add to the
lesson plage.