Science · Year 7

Active learning ideas

Magnetic Forces and Fields

Active learning works well for magnetic forces because students need to see and interact with invisible fields to build accurate mental models. Hands-on activities let them test predictions, observe real patterns, and correct misconceptions through direct evidence.

• ACARA Content Descriptions
• AC9S7U04

• 20–45 min
• Pairs → Whole Class
• 4 activities

Activity 01

• Inquiry Circle
• 25 min · Pairs

Pairs: Pole Suspension Test

Suspend two bar magnets from strings at varying distances. Students predict and observe attraction or repulsion between like and opposite poles, then measure closest approach distances. Pairs record results in a table and explain patterns using force diagrams.

Explain how magnetic poles interact with each other.

Facilitation Tip

For the Pole Suspension Test, ask students to predict which pole will face downward before they hang the magnet, then have them explain any differences between their predictions and results.

What to look for

Provide students with a bar magnet and a collection of diverse materials (e.g., paperclip, plastic ruler, coin, wood block). Ask them to test each material and record whether it is attracted to the magnet, classifying it as magnetic or non-magnetic.

• Analyze
• Evaluate
• Create
• Self-Management
• Self-Awareness

Activity 02

• Inquiry Circle
• 30 min · Small Groups

Small Groups: Iron Filings Visualization

Place a bar magnet under white paper, sprinkle iron filings evenly, and tap gently to align them. Groups sketch field lines, noting density near poles, then repeat with a horseshoe magnet for comparison. Discuss how patterns reveal field strength.

Visualize the invisible magnetic fields around different types of magnets.

Facilitation Tip

During the Iron Filings Visualization, remind students to tap the tray gently so filings settle slowly, revealing clearer field lines without obscuring the pattern.

What to look for

Present students with diagrams showing different arrangements of two bar magnets (e.g., North to North, North to South). Ask: 'Explain what is happening in each diagram. How do you know? What would you observe if you sprinkled iron filings around these magnets?'

• Analyze
• Evaluate
• Create
• Self-Management
• Self-Awareness

Activity 03

• Inquiry Circle
• 20 min · Individual

Individual: Compass Field Mapping

Students slowly move a compass around a magnet, marking north-pointing needle positions to trace field lines. Label poles and arrows for direction. Compare personal maps in a whole-class gallery walk.

Differentiate between temporary and permanent magnets.

Facilitation Tip

When students do Compass Field Mapping, have them move the compass in small steps to trace each line, preventing gaps that lead to incomplete field models.

What to look for

Students draw a simple horseshoe magnet and sketch the magnetic field lines around it, labeling the poles. They then write one sentence comparing a permanent magnet to a temporary magnet.

• Analyze
• Evaluate
• Create
• Self-Management
• Self-Awareness

Activity 04

• Stations Rotation
• 45 min · Small Groups

Stations Rotation: Magnet Types

Set up stations for permanent magnets testing materials, building a simple electromagnet with wire and battery, plotting fields with apps or paper, and pole plotting with multiple magnets. Groups rotate, documenting one key finding per station.

Explain how magnetic poles interact with each other.

Facilitation Tip

At the Magnet Types station, provide labeled samples and ask students to record observations about strength and field shape before generalizing patterns across types.

What to look for

Provide students with a bar magnet and a collection of diverse materials (e.g., paperclip, plastic ruler, coin, wood block). Ask them to test each material and record whether it is attracted to the magnet, classifying it as magnetic or non-magnetic.

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

A few notes on teaching this unit

Start by having students explore simple magnets to build intuition before formalizing concepts. Avoid front-loading too much vocabulary; let students describe observations in their own words first. Research shows that drawing field lines improves spatial understanding, so include sketching in every activity. Use student predictions and quick tests to surface misconceptions early, then revisit them after evidence is collected.

Successful learning looks like students using evidence from their tests to explain magnetic behavior, sketch accurate field lines, and classify materials correctly. They should connect their observations to the idea that magnetic forces act at a distance and shape fields around magnets.

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Watch Out for These Misconceptions

• During Iron Filings Visualization, watch for students assuming all metals are attracted to magnets.

  Ask students to test each metal sample with the magnet during the activity and record whether attraction occurs, then have them classify samples as magnetic or non-magnetic based on their own data.

• During Pole Suspension Test, watch for students believing they can separate poles by cutting a magnet.

  After students observe the original magnet’s poles, have them predict what will happen if they cut it, then test by cutting a bar magnet and observing that two new magnets with pairs of poles form.

• During Compass Field Mapping, watch for students drawing field lines only between the poles.

  Ask students to trace the full loop of each field line around the entire magnet, including areas away from the poles, to correct the idea that fields exist only between poles.

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Methods used in this brief

• Inquiry Circle
• Stations Rotation