The Skeletal System: Bones and Support

Active learning works for the skeletal system because bones and joints are invisible until you move them. By handling models and building structures, students turn abstract textbook facts into physical understanding they can test and explain.

• Year 6
• Science
• 4 activities
• 25 min–50 min

Learning Objectives

1. Classify bones by shape and identify their primary function in the human body.
2. Explain how different types of joints, such as hinge and ball-and-socket, facilitate specific movements.
3. Analyze the interdependence of bones, muscles, and joints in enabling locomotion.
4. Design a simple model that demonstrates the mechanical advantage provided by bones and muscles working together.

Stations Rotation

⏱ 45 min·Small Groups

Stations Rotation: Bone Classification Stations

Prepare stations with images and models of long, short, flat, and irregular bones. Students sort examples, note functions, and draw labelled diagrams. Rotate groups every 10 minutes, then share findings in a class gallery walk.

Prepare & details

Differentiate the functions of different types of bones.

Facilitation Tip: During Bone Classification Stations, circulate with a checklist of expected matches and listen for students to justify their choices before confirming accuracy.

Setup: Tables/desks arranged in 4-6 distinct stations around room

Materials: Station instruction cards, Different materials per station, Rotation timer

• Remember
• Understand
• Apply
• Analyze
• Self-Management
• Relationship Skills

Project-Based Learning

⏱ 30 min·Pairs

Model Building: Hinge Joint Tester

Provide craft sticks, brass fasteners, and rubber bands for students to build hinge joint models like elbows. Test range of motion and add weights to simulate stress. Record observations on how joints bend without breaking.

Prepare & details

Explain how joints allow for movement in the body.

Facilitation Tip: When running the Hinge Joint Tester, ask students to hold their tester at three angles and predict which angle will lift the load the easiest before testing.

Setup: Flexible workspace with access to materials and technology

Materials: Project brief with driving question, Planning template and timeline, Rubric with milestones, Presentation materials

• Apply
• Analyze
• Evaluate
• Create
• Self-Management
• Relationship Skills
• Decision-Making

Project-Based Learning

⏱ 50 min·Small Groups

Design Challenge: Muscle-Bone Arm

Use cardboard tubes for bones, string for muscles, and pulleys for tendons. Groups construct a model arm that lifts a weight when strings pull. Test, refine, and present how contraction enables movement.

Prepare & details

Design a model demonstrating how muscles and bones work together.

Facilitation Tip: In the Muscle-Bone Arm challenge, provide one bone per pair and ask them to trace the path their tendon would take before gluing muscles in place.

Setup: Flexible workspace with access to materials and technology

Materials: Project brief with driving question, Planning template and timeline, Rubric with milestones, Presentation materials

• Apply
• Analyze
• Evaluate
• Create
• Self-Management
• Relationship Skills
• Decision-Making

Project-Based Learning

⏱ 25 min·Whole Class

Whole Class: Skeleton Mapping

Project a body outline; students label major bones and joints from memory or atlases. Discuss functions in pairs before adding to the map. Extend by marking growth plates.

Prepare & details

Differentiate the functions of different types of bones.

Facilitation Tip: During Skeleton Mapping, assign each student one bone to label and defend its function to a partner before adding it to the class skeleton.

Setup: Flexible workspace with access to materials and technology

Materials: Project brief with driving question, Planning template and timeline, Rubric with milestones, Presentation materials

• Apply
• Analyze
• Evaluate
• Create
• Self-Management
• Relationship Skills
• Decision-Making

Teaching This Topic

Teachers should start with the body in motion, not static diagrams. Research shows that students grasp joint mechanics faster when they build and test models first, then label diagrams. Avoid long lectures on bone names; instead, use quick checks where students move and name their own joints. Connect misconceptions directly to the materials—for example, when a student claims bones push, hand them a string and ask them to lift a book with it.

What to Expect

Successful learning looks like students accurately matching bone shapes to functions, demonstrating joint movements with correct terminology, and explaining how muscles and bones work together to produce movement. They should use precise language and show confidence in their models.

Watch Out for These Misconceptions

Common Misconception

During Bone Classification Stations, watch for students who group all bones together because they look similar, ignoring shape clues like length or flat surfaces.

What to Teach Instead

Ask students to run their fingers along each bone model and describe which parts feel rigid or flexible, then sort again using those tactile clues.

Common Misconception

During the Muscle-Bone Arm challenge, watch for students who pull the string away from the bone instead of pulling across the joint.

What to Teach Instead

Have them trace the string path on their model with a pencil to show the pull must cross the joint to move the bone.

Common Misconception

During Skeleton Mapping, watch for students who assume all bones protect organs or all bones help with movement.

What to Teach Instead

Prompt them to compare flat bones like the ribs with long bones like the femur and explain why each shape supports a different function.

Assessment Ideas

Exit Ticket

After Bone Classification Stations, collect each student’s labeled set of bones and check that they correctly identify at least one long bone, one flat bone, and one irregular bone with a function sentence for each.

Quick Check

During the Muscle-Bone Arm challenge, observe pairs as they manipulate their model and listen for them to explain that the string pulls the bone at the joint to create movement, noting which students use correct terminology.

Discussion Prompt

After Skeleton Mapping, pose the robot arm question and record key points on the board, assessing which students connect bone shapes and joint types to movement requirements in their explanations.

Extensions & Scaffolding

• Challenge: Ask students to design a new joint type that could move in two ways not seen in their models.
• Scaffolding: Provide pre-cut bone shapes with labels and ask students to sort them by function before building.
• Deeper exploration: Have students research how animals with different bone structures move, then present one adaptation and explain its advantage.

Key Vocabulary

Skeletal System	The framework of bones and cartilage that supports and protects the body. It also stores minerals and produces blood cells.
Joint	A place where two or more bones meet. Joints allow for movement and provide flexibility to the skeleton.
Ligament	Tough bands of tissue that connect bones to other bones at joints, providing stability.
Tendon	Tough cords of tissue that connect muscles to bones, transmitting the force needed for movement.
Cartilage	A flexible connective tissue found in many areas of the body, including joints. It acts as a cushion between bones and allows for smooth movement.