This short film, narrated by Sir David Attenborough, features a stunning animation that should be useful for teaching evolution at KS4. You’ll still need to show your students a diagram of the Tree of Life at some point, but this film does a great job of bringing such diagrams to life.

You can download a high definition version of the film at the Wellcome Trust’s dedicated “Tree of Life” website where you’ll also find a bunch of other resources to help teach evolution, including worksheets and the transcript of the video.