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Muscles and movement

Science Year 3
This unit is part of Year 3 Science Keeping Healthy

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Objectives

Learn how muscles work in pairs and investigate the question 'Do people have stronger muscles because they use them more?' Make predictions, gather data, discuss, display and interpret findings.

Science Objectives
i) Identify that humans and some other animals have skeletons and muscles for support, protection and movement.

Working Scientifically

  1. Gather, record, classify and present data in a variety of ways to help in answering questions.
  2. Use straightforward scientific evidence to answer questions or to support findings - pattern seeking enquiry.

Other Curriculum Areas
Maths - Statistics

  • Interpret and present data using bar charts, pictograms and tables.
  • Understand and use simple scales (e.g. 2, 5, 10 units per cm) in pictograms and bar charts with increasing accuracy.
  • Continue to interpret data presented in many contexts.

Extended Writing Opportunities
Recount: Write up for the TV programme Newsround, as a recount, your investigation ‘Do some people have stronger muscles because they use them more?’

You Will Need

Provided Resources

  • A copy of the task sheet per group

Additional Resources

  • A full water bottle for every child (their usual class drinking bottle will be fine)
  • A drum
  • Pens, pencils and rulers
  • A flip chart marked with 2 axes
  • Marker pens

Weblinks
BBC Teach 'How do our muscles and bones work?' from www.bbc.co.uk

Lesson Planning

Teaching

  • Understand how muscles work in pairs to allow movement and maintain posture.
  • Investigate whether people who do more sport have stronger muscles.

Activities

  1. Investigate how muscles work in pairs (biceps and triceps) using a bottle of water as a weight.
  2. Investigate the question –Do some people have stronger muscles because they use them more?
  3. With guidance, decide what data to collect, how to tabulate it and how to share out the work in the group.
  4. With guidance display data as a scattergram and use it to look for a pattern in the data.

Investigation - exploring/analysing secondary sources
Investigate the question –Do some people have stronger muscles because they use them more?

Vocabulary
Muscles, joints, tendons, contract, relax, biceps, triceps, data, scattergram

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