Magnets and Electromagnetism

Active learning helps students visualise magnetic fields that are invisible to the naked eye. When students manipulate materials and observe real-time changes, they internalise abstract concepts like field lines and magnetic forces more effectively than with passive instruction.

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

Learning Objectives

1. Explain the relationship between electric current and magnetic fields using scientific terminology.
2. Compare the strength of electromagnets constructed with varying numbers of coils, core materials, and current levels.
3. Design and sketch a simple device that utilizes an electromagnet to perform a specific task.
4. Analyze the factors that influence the strength of an electromagnet.

Stations Rotation

⏱ 45 min·Small Groups

Inquiry Lab: Electromagnet Construction

Supply batteries, insulated wire, iron nails, and paperclips. Students wrap varying coil numbers around nails, connect to circuits, and test lift capacity by counting paperclips. Groups graph results to identify strength patterns.

Prepare & details

Explain how an electric current can generate a magnetic field.

Facilitation Tip: During Inquiry Lab: Electromagnet Construction, remind students to keep coils tight and even for consistent results.

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

Stations Rotation

⏱ 30 min·Pairs

Field Mapping: Permanent vs Temporary Magnets

Students sprinkle iron filings around bar magnets and electromagnets on paper, tap gently to reveal field lines, and sketch patterns. Compare shapes and densities between permanent and temporary magnets. Discuss similarities.

Prepare & details

Compare the strength of different electromagnets based on their construction.

Facilitation Tip: During Field Mapping: Permanent vs Temporary Magnets, have students sketch their observations immediately after each test to reinforce visual memory.

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

Stations Rotation

⏱ 50 min·Small Groups

Design Challenge: Electromagnetic Crane

Challenge groups to build an electromagnet arm that lifts and releases metal objects using circuits and cardboard. Test designs, measure max load, and iterate based on failures like weak fields or short circuits.

Prepare & details

Design a simple device that uses electromagnetism to perform a task.

Facilitation Tip: During Design Challenge: Electromagnetic Crane, circulate with a timer to ensure groups stay on task and test ideas before finalising designs.

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

Stations Rotation

⏱ 40 min·Small Groups

Stations Rotation: Magnet Properties

Set up stations for pole identification with compasses, attraction tests on materials, repulsion demos with floating magnets, and basic electromagnets. Groups rotate, record observations, and share findings.

Prepare & details

Explain how an electric current can generate a magnetic field.

Facilitation Tip: During Station Rotation: Magnet Properties, provide only one magnet per station to prevent groups from dominating materials.

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

Teaching This Topic

Start with hands-on exploration before introducing formal terms. Students need to feel the resistance between poles before explaining attraction and repulsion. Use analogies sparingly; magnetic fields are unique and deserve direct observation. Research shows students often confuse magnetic and electric fields, so emphasise differences early and revisit throughout the unit.

What to Expect

Students will articulate how magnetism and electromagnetism work and justify their designs with evidence. They will use precise vocabulary to explain temporary versus permanent magnetism and troubleshoot variables that affect field strength.

Watch Out for These Misconceptions

Common Misconception

During Station Rotation: Magnet Properties, watch for students who assume aluminium foil or copper wire will be attracted to magnets.

What to Teach Instead

Have students test these materials directly at the station and record results in a table, then compare with iron nails to reinforce that only ferromagnetic metals respond.

Common Misconception

During Inquiry Lab: Electromagnet Construction, listen for students who claim electromagnets are always stronger than bar magnets.

What to Teach Instead

Ask them to build two versions with varying coil turns and compare lifting power using washers, then discuss why strength depends on design rather than magnet type.

Common Misconception

During Field Mapping: Permanent vs Temporary Magnets, observe students who think the magnetic field exists only inside the coil.

What to Teach Instead

Use iron filings to trace the full field pattern and have students compare it to a bar magnet’s field, prompting a group discussion to correct the misconception.

Assessment Ideas

Exit Ticket

After Inquiry Lab: Electromagnet Construction, provide a diagram of an electromagnet and ask students to label the coil, core, and power source, then write one sentence explaining how to make the magnet stronger.

Quick Check

During Inquiry Lab: Electromagnet Construction, circulate with a checklist to observe students as they build electromagnets. Ask guiding questions such as 'What happens when you add more coils?' or 'How does changing the core affect the magnetism?' and record observations.

Discussion Prompt

After Design Challenge: Electromagnetic Crane, pose the question: 'Imagine you need to design a device to sort magnetic and non-magnetic objects on a conveyor belt. What key components would your device need, and how would electromagnetism help?' Facilitate a brief class discussion where students share their ideas.

Extensions & Scaffolding

• Challenge: Ask students to design a switch that can turn the electromagnet on and off without disconnecting the battery.
• Scaffolding: Provide a labelled diagram of an electromagnet with missing parts; students fill in the labels and explain each role.
• Deeper exploration: Have students research how MRI machines use electromagnets and compare their designs to classroom electromagnets.

Key Vocabulary

Electromagnet	A type of magnet where the magnetic field is produced by an electric current. The magnetic field disappears when the current is turned off.
Magnetic Field	The area around a magnet or an electric current where magnetic forces can be detected. It is often visualized with lines of force.
Coil	A length of wire wound into a series of loops. When electric current flows through the coil, it generates a magnetic field.
Core	The material placed inside a coil of wire. In electromagnets, a ferromagnetic material like iron is often used as the core to strengthen the magnetic field.
Electric Current	The flow of electric charge, typically electrons, through a conductor. Moving electric charges produce magnetic fields.