Teaching about animal adaptations - physical traits and behaviors is a fun standard in 4th grade science. This is one activity my kids love to do! Set out posters of animals, books on animals (you can even use your reading series textbook and find informational text on animals), pull up websites on animals, and have turtle shells, a rack of antlers, etc. and even stuffed animals setting out. Rotate groups of students around the different places so they can read about / investigate animals and their adaptations and record them on this sheet.