Advanced Chemical Principles and Molecular Dynamics · 6th Year

Active learning ideas

Our Bodies: Bones and Muscles

Students learn best when they can touch, move, and see concepts in action, especially when studying systems as complex as bones and muscles. Active learning builds spatial reasoning and kinesthetic awareness, helping students internalize how these systems work together for movement and protection.

• NCCA Curriculum Specifications
• NCCA: Primary Science Curriculum - Living Things

• 30–50 min
• Pairs → Whole Class
• 4 activities

Activity 01

• 45 min · Small Groups

Model Building: Pasta Skeleton

Provide pasta shapes for bones, marshmallows for joints, and glue. Students assemble a basic arm or leg skeleton, label major bones, and test joint movement by flexing. Discuss stability and flexibility in pairs afterward.

What are bones for?

Facilitation Tip

During the Pasta Skeleton activity, circulate and ask students to point out where tendons would attach to their models to connect bones to muscles.

What to look for

Provide students with a diagram of a long bone. Ask them to label the periosteum, osteocytes, and the medullary cavity. Then, ask them to write one sentence explaining the function of the periosteum.

Activity 02

• Stations Rotation
• 50 min · Small Groups

Stations Rotation: Muscle Contractions

Set up stations with rubber bands for biceps simulation, balloons inflating for diaphragm, spring scales for force measurement, and mirrors for observing facial muscles. Groups rotate, record contractions, and note antagonist pairs.

How do our muscles help us move?

Facilitation Tip

In the Muscle Contractions station, have pairs time each other’s contractions to quantify differences in muscle fatigue over repeated trials.

What to look for

Pose the question: 'Imagine you are advising a younger sibling on how to keep their bones and muscles healthy. What are the two most important pieces of advice you would give them, and why?' Facilitate a class discussion where students share and justify their recommendations.

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

Activity 03

• 35 min · Pairs

Movement Challenge: Lever Systems

Pairs act as human levers: one holds a partner as a fulcrum for arm curls with books. Identify first-, second-, and third-class levers in body examples like elbow, neck, and ankle. Chart findings on class poster.

Why is it important to keep our bones and muscles healthy?

Facilitation Tip

For the Lever Systems challenge, provide meter sticks and small weights so students can measure and compare the effort needed for different load placements.

What to look for

On an index card, have students draw a simple diagram illustrating how a muscle attaches to a bone via a tendon. Below the diagram, they should write one sentence describing the role of calcium ions in muscle contraction.

Activity 04

• 30 min · Individual

Health Log: Bone and Muscle Tracker

Individuals track daily activities affecting bones and muscles, like jumping or stretching, over a week. Use charts to log calcium foods and exercise. Share patterns in whole-class discussion.

What are bones for?

What to look for

Provide students with a diagram of a long bone. Ask them to label the periosteum, osteocytes, and the medullary cavity. Then, ask them to write one sentence explaining the function of the periosteum.

A few notes on teaching this unit

Teachers should emphasize the dynamic nature of bones and muscles by connecting each activity to real-world examples, like how athletes’ bones adapt to stress or how weightlifting strengthens both systems. Avoid presenting these systems as static; instead, use analogies like scaffolding for bones or pulleys for muscles to make abstract ideas concrete. Research shows that students grasp complex systems more deeply when they manipulate models and observe immediate feedback from their actions.

Successful learning looks like students explaining bone remodeling during weight-bearing challenges, demonstrating muscle pull in station rotations, and applying lever principles in movement tasks. They should articulate the interdependence of bones and muscles through clear labels, diagrams, and discussions.

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Watch Out for These Misconceptions

• During the Pasta Skeleton activity, watch for students assuming bones are rigid and unchanging.

  Ask them to gently bend their pasta models while observing slight flexes, then discuss how real bones contain living cells that adapt to stress, such as in weight-bearing exercise.

• During the Muscle Contractions station, watch for students thinking muscles can push bones away.

  Have them use rubber bands to simulate contraction and release, demonstrating that muscles only pull and require opposing muscles to return to rest.

• During the Lever Systems challenge, watch for students separating the roles of bones and muscles.

  Ask them to rebuild their models without attaching 'muscles' to bones, then observe how the structure collapses to highlight their interdependence.

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Methods used in this brief

• Stations Rotation