Great set of stories for Xmas reading. Students can read the story or hear it read and/or print the story as colouring pages. The whole North Pole site has many activities but also some sections such as the toyshop which are basically advertising that links to online shopping.
Excellent collection of ebooks such as The Very Hungry Caterpillar, Ferdinand the Bull, etc. at this site. Also check out their collection of Rhymes and Songs.
Excellent Harcout interactive has students drag pics onto a food web showing the food chain. Three webs: meadow, arctic, pond Suitable for elementary and middle school.
Great sub-titled video with pictures and song created by a teacher. Explains the food chain and calorie transfer from one level to another. Suitable for upper elementary or middle school.