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Life Science · Animal Diversity

Animal Classification: Vertebrates & Invertebrates

Use body-structure evidence to classify animals as vertebrates or invertebrates and then compare familiar groups such as mammals, birds, insects, arachnids, mollusks, and crustaceans.

Lesson plan

Animal Classification: Vertebrates & Invertebrates

A step-by-step guide to help you teach this lesson.

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Lesson overview

What students will learn

  • Classify animals as vertebrates or invertebrates using backbone evidence.
  • Use body features to place familiar animals into smaller classification groups.

Key science ideas

  • Vertebrates have a backbone; invertebrates do not.
  • Backbone evidence is more useful than size, habitat, or whether an animal can fly.
  • Common vertebrate groups include mammals, birds, reptiles, amphibians, and fishes.

Lesson at a glance

  • Grade 3
  • 45 min
  • ~10 min prep
  • 4 materials

What’s included

  • Lesson Plan
  • Investigation
  • Teacher Slides
  • Printable Worksheet
  • Teacher Answer Key
  • Interactive Activity
  • Vocabulary