Science · Grade 4

Active learning ideas

Magnets and Magnetism

Active learning helps fourth graders grasp the invisible nature of magnetism by turning abstract ideas into concrete experiences. When students handle magnets, test materials, and map fields, they build durable understanding that lasts beyond the lesson.

• Ontario Curriculum Expectations
• 3-PS2-3

• 25–45 min
• Pairs → Whole Class
• 4 activities

Activity 01

• Stations Rotation
• 45 min · Small Groups

Stations Rotation: Magnet Interactions

Prepare four stations: pole testing with bar magnets, material sorting with assorted objects, field mapping with iron filings and paper, and compass tracing around magnets. Small groups rotate every 10 minutes, draw observations, and share one finding per station. Conclude with class discussion on patterns.

Explain how magnets attract and repel objects.

Facilitation Tip

During Magnet Interactions, circulate with labeled magnets to reinforce pole naming and ensure groups rotate efficiently without skipping stations.

What to look for

Provide students with a collection of objects (e.g., paperclip, coin, eraser, nail, plastic toy). Ask them to predict which objects will be attracted to a magnet, then test their predictions and record the results in a simple chart.

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

Activity 02

• Experiential Learning
• 25 min · Pairs

Pairs Challenge: Prediction Tests

Partners predict if 20 classroom items will attract to a magnet, then test and classify into magnetic or non-magnetic piles. They record results in a T-chart and explain one surprise. Switch roles for a second round with stronger magnets.

Predict which materials will be attracted to a magnet.

Facilitation Tip

For Prediction Tests, provide one set of objects per pair so students must negotiate predictions and share materials fairly.

What to look for

Give students a card with two bar magnets drawn on it. Ask them to draw the magnets interacting, showing either attraction or repulsion, and label the poles involved. Include a sentence explaining their drawing.

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

Activity 03

• Experiential Learning
• 35 min · Small Groups

Small Groups: Field Strength Experiment

Groups design a test ramp to measure how magnet distance affects paperclip chain length. They vary distance, measure, graph data, and present findings. Provide rulers and clipboards for accuracy.

Design an experiment to map a magnetic field.

Facilitation Tip

In Field Strength Experiment, remind groups to keep iron filings in sealed containers to minimize mess and focus on clear field patterns.

What to look for

Pose the question: 'Imagine you have two magnets, but you can't see their poles. How could you figure out which pole is North and which is South without using a compass?' Facilitate a class discussion where students share their experimental ideas.

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

Activity 04

• Experiential Learning
• 30 min · Whole Class

Whole Class: Magnet Scavenger Hunt

Display magnets around the room; students note attracted objects and sketch field effects. Discuss as a class, vote on strongest observations, and create a shared magnetic materials chart.

Explain how magnets attract and repel objects.

What to look for

Provide students with a collection of objects (e.g., paperclip, coin, eraser, nail, plastic toy). Ask them to predict which objects will be attracted to a magnet, then test their predictions and record the results in a simple chart.

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

A few notes on teaching this unit

Approach this topic by letting students test predictions before formal explanations, because research shows misconceptions persist when teachers explain first. Use everyday objects like paper clips and coins to ground abstract ideas in familiar contexts, and avoid rushing to definitions before hands-on evidence is collected. Encourage students to revise their ideas based on what they observe rather than correcting them outright.

Successful learning appears when students confidently predict magnetic interactions, explain why some objects attract while others do not, and sketch magnetic field lines with labeled poles. Look for clear reasoning during discussions and accurate recording of results in charts or diagrams.

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Watch Out for These Misconceptions

• During Station Rotation: Magnet Interactions, watch for students who assume any metal will stick to a magnet.

  Have students sort a mixed set of metal objects into 'sticks' and 'does not stick' groups, then compare lists to identify patterns. Use this evidence to discuss which metals are ferromagnetic before moving to the next station.

• During Pairs Challenge: Prediction Tests, watch for students who claim magnets only attract and never repel.

  Ask pairs to test labeled magnets with clear North and South ends, recording which arrangements cause attraction or repulsion. Use their recorded results to revise the class rule about pole interactions.

• During Small Groups: Field Strength Experiment, watch for students who think magnetic fields exist only at the poles.

  Have groups sprinkle iron filings evenly around the entire magnet, then sketch the full pattern. Compare sketches to show that fields surround the magnet, not just the ends.

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Methods used in this brief

• Stations Rotation
• Experiential Learning