Build and test a muscle model

Lesson overviewBUILD · Week 4

Build and test a muscle model

A model you can explain.

I can use the pair labels to explain two movements.

Card arm model with two card pieces joined at an elbow pivot and strings representing muscle pulls.

Build and test a muscle modelSlide 1 of 10

StarterBUILD · Week 4

Retrieve the pair and check the join

Find Monday’s biceps and triceps labels.

Check that the prepared elbow can turn.

Choose: build, direct, label or explain.

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You Do · practiseBUILD · Week 4

Build with an adult’s preparation

Adult prepares and secures the turning join.

Put the model flat on the table.

Attach the loose pull strings to the tabs.

Keep each free end clear and untangled.

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You Do · practiseBUILD · Week 4

Make one careful bend

Hold the upper card steady.

Gently pull the bending string.

Place BICEPS — CONTRACTS.

Place TRICEPS — RELAXES.

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You Do · practiseBUILD · Week 4

Actively straighten and swap roles

Let the bending string slacken.

Gently use the opposite pull.

Place TRICEPS — CONTRACTS.

Place BICEPS — RELAXES.

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You Do · practiseBUILD · Week 4

Explain both actions with labels

Direct a bend, then an active straighten.

Name the contracting muscle each time.

Say what happens to its partner.

Record the actions in your table.

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You Do · practiseBUILD · Week 4

Pause and check your model

Can the join turn without forcing it?

Is there a pull for each direction?

Do the labels match the chosen action?

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You Do · practiseBUILD · Week 4

Improve, explain and tidy

Fix one label or join with the adult.

Show or direct both actions again.

Name one way this differs from a real arm.

Keep your record and put the model away.

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Lundy Loop · pupil voiceBUILD · Week 4

Your voice can change the lesson

What helped you join in?

What could make the next activity easier?

Point, sign, speak, write or pass privately.

Adult: agree one change and explain any limit.

Build and test a muscle modelSlide 9 of 10

Exit checkBUILD · Week 4

What does the pair do?

Supported: show which muscle contracts in a bend.

Standard: explain the pair during active straighten.

Stretch: explain why one pull cannot push.

Build and test a muscle modelSlide 10 of 10

Use the controls or left and right arrow keys. Printing includes pupil content; model answers remain separate.