Download Add to Favorites Add to Folder creative writing children's book activities classroom tools language arts and writing vocabulary Create new folderCREATE NEW FOLDER Share Students are challenged to make an educated guess about the nature of endothermic and ectothermic animals. Grade: 3 | 4 | 5 Subjects: Amphibians Reptiles Animals (Zoology) Biology Science + show tags Themes: Animals TYPE: Worksheets