If you teach Biodiversity as part of your Sustainability studies these are great images and videos of threatened species around the world. Suitable for 5 to 16 year olds, ARKive's free fun-packed teaching resources cover a range of key science and biology subjects including: adaptation, food chains, Darwin and natural selection, classification, identification, conservation and biodiversity. These teaching resources include: classroom presentations, activities and handouts, teachers' notes as well as links to ARKive species profiles and scrapbooks.