Muscles Work in Pairs

ScienceOrganisms & Life ProcessesAges 11–13

Explain that muscles work in antagonistic pairs — one contracts while the other relaxes — to produce movement, using the bicep and tricep as a key example

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Teaching Table

Set out your lesson

Practise the bounded task in Muscles Work in Pairs; see exact limits before inferring broader coverage.

Activity

Identify elbow and upper arm without needing to move your own body.

Policy

Exact directed source edges retained; earlier authorship is not learner attainment.

Materials

These supplied stage cards
Scrap paper and pencil; oral/pointing response where appropriate

Sequence

Read readiness and decide on support without treating prerequisite authoring as learner readiness.
Open Show first and explain its model.
Use Guided Try with support and its separate adult key.
Close Show and guided keys before Try, unless this Try is explicitly supported.
Reflect on an actual attempt, including help used.

No Printer

Use the supplied screen cards; copying the exact task to paper is optional, not required.

Privacy

Use only invented scenarios and optional anonymous local notes. Do not request names, photos, family finances, medical data, accounts or uploads. Stop uncomfortable physical activity.

Use the complete materials on screen or print only the current sheet. Keep adult guidance out of learner view. Retain an earlier model only when the current step supplies it as context.

Teaching limits and safe use

These are finite task opportunities, not proof of mastery. Record what was attempted and what support was used.

Not a medical or exercise assessment; pain-free optional demonstration is unnecessary, and detailed multi-muscle anatomy is outside scope.

Use only invented scenarios and optional anonymous local notes. Do not request names, photos, family finances, medical data, accounts or uploads. Stop uncomfortable physical activity.

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Entire curriculum

1590 concepts · 8 subjects

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Teaching approaches

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1 approach

Selected Default Gakuva

Practise the bounded task in Muscles Work in Pairs; see exact limits before inferring broader coverage.

Family records and proof options

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Learning resources

External links for extra practice. They do not replace Gakuva’s teaching approach.

No additional resources are listed for this topic.

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Check understanding

Explains why muscles can only pull, not push
Describes what happens to the bicep and tricep when the arm is bent and straightened
Gives another example of an antagonistic muscle pair

“If your child bent and straightened their arm, could they explain why two different muscles are needed — one to bend and one to straighten — and which muscle is which?”

Curriculum record

Type: Conceptual
Subject: Science
Domain: Organisms & Life Processes
Age range: Ages 11–13

Standards

uk-nc-2013:KS3.Sci.Bio.SkeletalMuscular.3