- http://www.infovisual.info/02/056_en.html Bird skeleton
A good diagram of the bird skeleton.
A great introduction to the mammalian skeleton. A little above the level required but it has so much interesting information it's worth reading it.
- http://www.klbschool.org.uk/interactive/science/skeleton.htm The human skeleton
Test yourself on the names of the bones of the (human) skeleton.
Quite a good article on the different kinds of joints with diagrams.
- http://en.wikipedia.org/wiki/Bone Wikipedia
Wikipedia is disappointing where the skeleton is concerned. Most articles stick entirely to the human skeleton or have far too much detail. However this one on compact and spongy bone and the growth of bone is quite good although still much above the level required.