Introduction to Magnetism

Active learning helps students grasp magnetism because invisible forces become visible through hands-on exploration. When students manipulate materials and observe immediate results, abstract concepts like magnetic fields and pole interactions become concrete and memorable.

• 6th Year
• Principles of Physics: Exploring the Physical World
• 4 activities
• 25 min–40 min

Learning Objectives

1. Classify materials as ferromagnetic, paramagnetic, or diamagnetic based on their interaction with a magnetic field.
2. Compare and contrast the magnetic field patterns of a bar magnet with the Earth's magnetic field.
3. Predict the resultant force (attraction or repulsion) when two magnetic poles are brought into proximity.
4. Explain the underlying cause of magnetism in ferromagnetic materials, relating it to electron spin alignment.

Experiential Learning

⏱ 35 min·Small Groups

Testing Stations: Material Attraction

Prepare stations with iron nails, aluminum foil, plastic, and paper clips. Students test each material with bar magnets, recording attraction or repulsion. Groups then classify materials as magnetic or non-magnetic based on results.

Prepare & details

Explain why magnets attract some materials but not others.

Facilitation Tip: During Testing Stations, have students work in pairs to test materials, ensuring they rotate roles between tester and recorder to keep both engaged.

Setup: Varies; may include outdoor space, lab, or community setting

Materials: Experience setup materials, Reflection journal with prompts, Observation worksheet, Connection-to-content framework

• Apply
• Analyze
• Evaluate
• Self-Awareness
• Self-Management
• Social Awareness

Experiential Learning

⏱ 25 min·Pairs

Field Mapping: Iron Filings

Sprinkle iron filings on paper over a bar magnet; students gently tap to reveal field lines. They sketch patterns and repeat with horseshoe magnets. Pairs compare sketches to compass traces.

Prepare & details

Compare the magnetic field lines around a bar magnet to those around the Earth.

Facilitation Tip: During Field Mapping, remind students to gently tap containers to settle filings and clearly label their sketches of field lines before moving on.

Setup: Varies; may include outdoor space, lab, or community setting

Materials: Experience setup materials, Reflection journal with prompts, Observation worksheet, Connection-to-content framework

• Apply
• Analyze
• Evaluate
• Self-Awareness
• Self-Management
• Social Awareness

Experiential Learning

⏱ 30 min·Pairs

Pole Prediction Relay: Interactions

Line up pairs with magnets; teacher calls pole combinations (N-N, S-S). Students predict and demonstrate outcomes, then rotate magnets. Class discusses patterns on board.

Prepare & details

Predict what happens when two north poles of magnets are brought close together.

Facilitation Tip: During Pole Prediction Relay, set a timer for 1 minute per round to maintain energy and prevent over-explaining—let the evidence speak for itself.

Setup: Varies; may include outdoor space, lab, or community setting

Materials: Experience setup materials, Reflection journal with prompts, Observation worksheet, Connection-to-content framework

• Apply
• Analyze
• Evaluate
• Self-Awareness
• Self-Management
• Social Awareness

Experiential Learning

⏱ 40 min·Whole Class

Earth Model: Compass Walk

Place bar magnets under paper sheets; students walk compasses around to trace Earth's field lines. Note alignment at poles. Whole class shares observations.

Prepare & details

Explain why magnets attract some materials but not others.

Facilitation Tip: During Earth Model, guide students to walk slowly and observe the compass needle’s direction in different locations to connect the activity to Earth’s magnetic field.

Setup: Varies; may include outdoor space, lab, or community setting

Materials: Experience setup materials, Reflection journal with prompts, Observation worksheet, Connection-to-content framework

• Apply
• Analyze
• Evaluate
• Self-Awareness
• Self-Management
• Social Awareness

Teaching This Topic

Teaching magnetism works best when students build their understanding through direct observation and prediction. Avoid front-loading too much theory; instead, let students experience contradictions to their ideas, then guide them to revise. Research shows that students retain concepts better when they confront misconceptions through guided discovery rather than passive instruction.

What to Expect

Students will confidently identify and explain the north and south poles of magnets, map magnetic fields with iron filings, and predict interactions between poles using evidence from their experiments. They will also categorize materials based on magnetic properties and relate these observations to the alignment of domains in ferromagnetic objects.

Watch Out for These Misconceptions

Common Misconception

During Testing Stations, watch for students assuming magnets attract all metals.

What to Teach Instead

Provide a varied set of materials, including non-ferromagnetic metals like aluminum and copper, and ask students to sort them into 'attracted' and 'not attracted' piles, then discuss why only iron, nickel, and cobalt are affected.

Common Misconception

During Field Mapping, watch for students thinking magnetic fields stop at the ends of the magnet.

What to Teach Instead

Have students trace the full loop of field lines with their fingers on their iron filing maps, emphasizing that fields extend continuously from north to south poles around the entire magnet.

Common Misconception

During Pole Prediction Relay, watch for students believing a single magnet can have just one pole.

What to Teach Instead

Ask students to predict what will happen if they bring the broken halves of a magnet together, then test their predictions using the relay materials to observe that new north and south poles form on each piece.

Assessment Ideas

Quick Check

After Testing Stations, circulate and ask each pair to explain why they classified a material as magnetic or non-magnetic, listening for evidence of domain alignment or lack thereof.

Exit Ticket

After Field Mapping, collect students’ sketches and ask them to label the poles and write one sentence explaining how the iron filings show the magnetic field’s direction.

Discussion Prompt

During Pole Prediction Relay, pause after the first round and ask students to share their predictions about what happens when like poles face each other, then discuss why their predictions were correct or incorrect based on their observations.

Extensions & Scaffolding

• Challenge students to predict and test how stacking magnets affects field strength by measuring how many paperclips each stack can hold.
• Scaffolding for struggling students: Provide labeled diagrams of magnetic domains and ask them to match materials to whether their domains are aligned or random.
• Deeper exploration: Have students research how electromagnets work and build a simple one using a battery, nail, and wire to connect magnetism to real-world applications.

Key Vocabulary

Magnetic Pole	The two ends of a magnet, designated as North and South, where the magnetic force is strongest.
Magnetic Field	The region around a magnet where magnetic forces can be detected, visualized by field lines running from North to South poles.
Ferromagnetic Material	Materials like iron, nickel, and cobalt that are strongly attracted to magnets and can be magnetized themselves.
Magnetic Field Lines	Imaginary lines used to represent the direction and strength of a magnetic field, showing the path a north pole would take.