Addresses Science NGSS standard: SC.3.L.15.1 Classify animals into major groups according to their physical characteristics and behaviors.
This is a printable activity on Animal Classification. They will sort Vertebrate and Invertebrate animals. Then, they will write in characteristics of each animal group. The students can find pictures online, in newspapers, or magazines to cut and paste on their sheet.
Please see my Google Drive version if you prefer an interactive online version!