About this worksheet
This 3-page 3rd grade science sheet sorts 14 animals by whether they have a backbone. A short box defines vertebrates and invertebrates, then students place each labeled picture in the right column, from a dog and a shark to a snail and an octopus. Page 2 adds three questions on insects, an ocean invertebrate and where people belong. The answers page lists both columns in full and gives extra accepted ocean animals such as starfish, clam and lobster. It sits in the Animal Classification topic.
