Science Worksheet · Grades 3–5
Vertebrates and Invertebrates Worksheet
A printable science worksheet for grades 3-5 on vertebrates and invertebrates: animals with a backbone and animals without one. Students classify eight animals as vertebrate or invertebrate, then answer four short questions. A complete answer key is included.
Subject
Science
Grades
Grades 3–5
Skill Focus
Vertebrates and Invertebrates, animal classification
Lesson Length
15 minutes
Lesson Overview
About this worksheet
Scientists sort animals into two big groups based on one body part – the backbone. A vertebrate has a backbone (mammals, birds, fish, reptiles, amphibians); an invertebrate has no backbone (insects, spiders, worms, snails, jellyfish). This worksheet teaches students to classify animals by this single, clear criterion.
Section A gives eight animals (frog, spider, eagle, octopus) and asks students to write vertebrate or invertebrate for each. The reference box teaches the idea with a dog and a worm, animals not reused in the items.
Section B asks students which body part decides the group, to name one of each, whether most animals are vertebrates or invertebrates, and why a bird is a vertebrate. Page 3 is a complete answer key. The skill deepens animal classification.
How to Use This Lesson
Read the reference box aloud and feel for the backbone on a model or picture.
Complete Section A independently – have students ask ‘does it have a backbone?’
Work Section B item 10 together: name a vertebrate and an invertebrate as a class.
Use the answer key on page 3 for self-check or teacher review.
Pair with the Animal Classification Worksheet or the Insects Worksheet for a life-science mini-unit.
Printable Resource
A classroom-ready PDF with everything in one printable resource.
Free Member Resource · Printable PDF · 3 pages · Answer Key
Vertebrates and Invertebrates Worksheet
A printable science worksheet for grades 3-5 on vertebrates and invertebrates: animals with a backbone and animals without one. Students classify eight animals as vertebrate or invertebrate, then answer four short questions. A complete answer key is included.
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