How Our Bodies Move: Bones and Muscles

Active learning turns abstract ideas about bones and muscles into concrete experiences students can feel, see, and discuss. When students physically model movement, they connect internal body parts to visible actions, making the invisible work of muscles and joints clearer and more memorable.

• Year 1
• Science
• 4 activities
• 15 min–30 min

Learning Objectives

1. Identify the primary role of bones in providing structure and protection to the body.
2. Explain how muscles contract and relax to move bones.
3. Demonstrate how joints, like the elbow, allow for bending.
4. Compare the function of bones and muscles in maintaining upright posture.

Simulation Game

⏱ 20 min·Pairs

Pairs: Muscle Feel and Mirror

Partners face each other and mirror slow arm bends at the elbow. They place hands on their partner's bicep to feel muscle contraction, then switch roles. Discuss how the muscle changes shape to move the bone.

Prepare & details

Analyze how your arm bends at the elbow.

Facilitation Tip: During Muscle Feel and Mirror, remind students to gently press their partner’s arm while it is bent to feel the biceps tighten and the triceps relax before switching roles.

Setup: Flexible space for group stations

Materials: Role cards with goals/resources, Game currency or tokens, Round tracker

• Apply
• Analyze
• Evaluate
• Create
• Social Awareness
• Decision-Making

Simulation Game

⏱ 30 min·Small Groups

Small Groups: Straw Skeleton Arms

Provide straws for bones, pipe cleaners for muscles, and tape. Groups assemble an elbow joint model, test bending by pulling pipe cleaners. Record observations on how both parts create movement.

Prepare & details

Justify why we need both bones and muscles to move.

Facilitation Tip: In Straw Skeleton Arms, walk around with a pre-made model to show students how the string ‘muscles’ pull the straw ‘bones’ at the joint, reinforcing the connection between structure and movement.

Setup: Flexible space for group stations

Materials: Role cards with goals/resources, Game currency or tokens, Round tracker

• Apply
• Analyze
• Evaluate
• Create
• Social Awareness
• Decision-Making

Simulation Game

⏱ 25 min·Whole Class

Whole Class: Joint Freeze Dance

Play music; students move arms, legs freely then freeze to point and name bones or muscles used. Teacher models labeling humerus or bicep. Chart class predictions on finger movement without bones.

Prepare & details

Predict what would happen if you didn't have bones in your fingers.

Facilitation Tip: For Joint Freeze Dance, call out joint types (hinge, ball-and-socket) as you pause the music so students practice matching actions to correct terminology.

Setup: Flexible space for group stations

Materials: Role cards with goals/resources, Game currency or tokens, Round tracker

• Apply
• Analyze
• Evaluate
• Create
• Social Awareness
• Decision-Making

Simulation Game

⏱ 15 min·Individual

Individual: Body Map Trace

Students lie on paper, trace outlines, draw and label main bones and muscles on arms and legs. Add arrows showing pull directions for bending.

Prepare & details

Analyze how your arm bends at the elbow.

Setup: Flexible space for group stations

Materials: Role cards with goals/resources, Game currency or tokens, Round tracker

• Apply
• Analyze
• Evaluate
• Create
• Social Awareness
• Decision-Making

Teaching This Topic

Teach this topic through hands-on modeling paired with guided talk. Students need to see and feel the relationship between bones and muscles before they can explain it abstractly. Avoid starting with diagrams or labels; let students discover the system first through movement and then attach the correct vocabulary. Research shows that when children physically simulate muscle contractions, their recall of anatomy improves significantly.

What to Expect

Students will explain how bones and muscles work together by naming specific bones and muscles in the arm and describing their roles during movement. They will use terms like hinge joint, biceps, triceps, and contract while completing tasks and in follow-up reflections.

Watch Out for These Misconceptions

Common Misconception

During Muscle Feel and Mirror, watch for students who think the bone is moving on its own.

What to Teach Instead

As students feel their partner’s arm bend, prompt them to notice how the muscle tightens right before the arm moves, showing the muscle pulls the bone at the joint.

Common Misconception

During Straw Skeleton Arms, watch for students who believe the straw can move without the strings being pulled.

What to Teach Instead

Have students gently pull one string and observe how the straw bends only when a string is tugged, making the muscle-bone connection visible.

Common Misconception

During Joint Freeze Dance, watch for students who think all joints bend the same way.

What to Teach Instead

Call out specific joints and actions (e.g., ‘hinge joint at the elbow bending’) so students connect joint type to movement range.

Assessment Ideas

Exit Ticket

After Body Map Trace, provide students with a simple arm drawing. Ask them to label the humerus (forearm bone), elbow joint, biceps, and triceps. Then have them write one sentence explaining what the biceps does when the arm bends.

Quick Check

During Joint Freeze Dance, as students move, ask them to point to the joint they are using and name one muscle that helps them move it.

Discussion Prompt

After Straw Skeleton Arms, pose the question: ‘What happened when you pulled the string labeled ‘triceps’?’ Encourage students to explain how the string pulled the straw and why the arm straightened.

Extensions & Scaffolding

• Challenge students who finish early to create a new ‘body part’ using straws and string that mimics a different joint, such as the shoulder or knee, and label the bones and muscles involved.
• For students who struggle, provide a word bank with bone and muscle names and let them match labels to their Body Map Trace before writing explanations.
• Deeper exploration: Have students research and present on how different animals use bones and muscles for movement, comparing a human arm to a bird wing or fish tail.

Key Vocabulary

Bones	Hard, rigid structures that form the skeleton, providing support and protecting internal organs.
Muscles	Tissues that can contract and relax to move parts of the body, working with bones to create movement.
Skeleton	The framework of bones in the body that supports and protects.
Joint	A place where two or more bones meet, allowing for movement, such as bending at the elbow or knee.
Contract	To shorten or tighten, which is how muscles pull on bones to create movement.