384 Free teacher training videos for chemistry teachers. Watch as 20 master teachers perform hundreds of amazing demonstrations, and also learn how to incorporate these activities into your classroom. Free write-ups are included with each video.
Phylogenetic Tree of Life -The OpenLearn site used to offer this phylogenetic chart in the shape of a tree as a free poster, but no more. They do have an online version of this same illustration, expandable and with links and an explanatory guide.