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Year 3 - Science

Animal skeletons

Introduction to the human skeleton and muscles

Unit Summary

This unit explores the role of skeletons and muscles in humans and other animals for support, protection, and movement. It involves setting up practical enquiries, making observations, measuring accurately, recording findings, and using results to draw conclusions and suggest improvements.

Lesson Summary

You will learn to compare and group vertebrate animals based on their skeleton.

Key Notes

  • Different animals have different skeletons, including its size, shape and number of bones
  • A skeleton that is inside of the body is called an endoskeleton
  • Animals that have a spine inside their bodies are classed as vertebrates

Vocabulary To Learn

  • skeleton: A skeleton is the set of bones inside an animal's body that supports its shape, helps it move, and protects important parts.
  • compare: We compare things by looking at what is the same and what is different.
  • endoskeleton: Animals with an endoskeleton have an internal skeleton.
  • vertebrate: A vertebrate is an animal with an internal skeleton, including a spine.
  • spine: The backbone of an animal is also called its spine.

Common Mistakes To Avoid

  • Children often believe 'bendy' animals do not have a spine so classify them as invertebrates.

3 Quick Questions (With Answers)

1. Explain the scientific idea in this lesson using two key points.

Different animals have different skeletons, including its size, shape and number of bones. A skeleton that is inside of the body is called an endoskeleton.

2. Define this scientific word and use it in context. 'skeleton'

A skeleton is the set of bones inside an animal's body that supports its shape, helps it move, and protects important parts. Include the word in a full scientific explanation, not as a single label.

3. Correct this common scientific misunderstanding.

Mistake: Children often believe 'bendy' animals do not have a spine so classify them as invertebrates. Correction: Use images of X-rays/ skeletons of snakes and eels will illustrate that they have spines and are therefore vertebrates.

More Lessons In This Unit

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