Science Organisms & Life Processesusually ages 11–13

Muscles Work in Pairs

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

How to tell they’ve got it

Tick these off as you see them — no test required.

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

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Try this together

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?

Where this sits on the map

Stuck here? Check the skills it builds on first. Confident? Here’s what it unlocks.

Builds on

Joints, Tendons & Ligamentsages 11–13Antagonistic muscles only make sense in the context of how muscles attach to bones via joints

Muscles Work in Pairsthis skill · ages 11–13

Unlocks

Nothing on the map depends on this yet.

solid = must come firstdashed = helps

Curriculum alignment

Candidate matches to official curriculum codes — machine-suggested, unreviewed (v0.1).

This skill sits outside the F–6 Australian Curriculum — no candidate code matched (v0.1). No NSW K–6 outcome code matched (v0.1). No Victorian Curriculum 2.0 code matched (v0.1).

Nearby on the map

Calculating Dietary Energyages 11–13 Cells to Organ Systemsages 11–12 Cells Under the Microscopeages 11–12 Diet Imbalance & Deficiencyages 11–13

All Organisms & Life Processes skills →