PBS
Pbs Learning Media: Animal Coverings
It takes a thick skin to withstand the hardships that life has to offer. This collection of images shows a variety of animals, each with a slightly different type of protective covering.
Science Education Resource Center at Carleton College
Serc: Mn Step: Seasonal Changes of a Tree
For this activity, students adopt a tree in the schoolyard and observe it throughout the year, recording the changes that they notice as the seasons pass. They will learn about the parts of the tree and notice how the tree is used by...