Weird science straight from the owl's mouth. Barn Owl Pellets are a natural teaching tool. They are a fantastic example of the food chain, the principles of ecology, animal structure and function, skeletal anatomy, and natural history. From kindergarten to the collegiate level. Owl pellets meet the National Standards, Content Standard C: Grade 5-8, Populations and Ecosystems.Includes:* 8 posters - bone sorting, food web, vole skeleton, bird skeleton, mole skeleton, shrew skeleton, human / vole skeletal comparison, and pellet formation.* Set of 15 - 8.5" x 11" bone sorting sheets on paper stock and 30 large, heat sterilized, individually wrapped barn owl pellets.* Teacher's guide provides suggested teaching strategies, background information, laboratory guide, projects, skull keys, and references.