Science · Year 3

Active learning ideas

Magnetic Forces

Active learning helps Year 3 students grasp magnetic forces because concrete, hands-on experiences turn abstract ideas into visible outcomes. Students see repulsion, attraction, and strength differences when they manipulate real objects, making the invisible force tangible and memorable.

• ACARA Content Descriptions
• AC9S4U03

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

Activity 01

• Stations Rotation
• 45 min · Small Groups

Stations Rotation: Magnet Testing Stations

Prepare four stations: one for attraction (lift paperclips with various magnets), repulsion (push floating magnets in water), strength comparison (measure drop distances), and materials sort (test classroom items). Groups rotate every 10 minutes, draw predictions, test, and record results in tables.

Explain how magnets can attract or repel without touching.

Facilitation Tip

During Magnet Testing Stations, place a mix of magnetic and non-magnetic items at each station and have students record predictions before testing to reveal prior knowledge gaps.

What to look for

Provide students with a small collection of objects (e.g., paperclip, coin, plastic toy, iron nail). Ask them to sort the objects into two groups: 'Magnetic' and 'Non-Magnetic'. On the back, they should write one sentence explaining how they decided on the classification.

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

Activity 02

• Stations Rotation
• 25 min · Pairs

Pairs: Pole Identification Challenge

Provide bar magnets and compass needles. Pairs mark north and south poles by observing deflection, then test attractions and repulsions between magnets. They create a class chart of predictions versus outcomes.

Compare the strength of different magnets.

Facilitation Tip

For the Pole Identification Challenge, give each pair two bar magnets and ask them to mark the poles with stickers before testing interactions to build ownership of their findings.

What to look for

Present students with two bar magnets. Ask: 'What do you observe when I bring these ends together? What happens when I flip one magnet? Can you explain why this happens using the terms attraction and repulsion?'

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

Activity 03

• Stations Rotation
• 40 min · Small Groups

Small Groups: Design a Fair Test

Groups choose two magnets and design an experiment to compare strengths, such as maximum paperclips lifted or distance of attraction. They list variables to control, conduct trials, and present findings to the class.

Design an experiment to test which materials are magnetic.

Facilitation Tip

While students Design a Fair Test, circulate with a clipboard to note whether they control variables like distance or object size, gently guiding those who change multiple factors at once.

What to look for

During a hands-on activity where students are testing magnet strength, circulate and ask individual students: 'How are you measuring which magnet is stronger? What does it mean if a magnet can pull a paperclip from further away?'

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

Activity 04

• Stations Rotation
• 30 min · Whole Class

Whole Class: Magnetic Fishing Game

Hide magnetic and non-magnetic objects in a tub of shredded paper. Students take turns 'fishing' with string-tied magnets, classify catches, and discuss why some items were attracted.

Explain how magnets can attract or repel without touching.

Facilitation Tip

In the Magnetic Fishing Game, assign roles like recorder or fisher to ensure all students participate and discuss their observations as a group.

What to look for

Provide students with a small collection of objects (e.g., paperclip, coin, plastic toy, iron nail). Ask them to sort the objects into two groups: 'Magnetic' and 'Non-Magnetic'. On the back, they should write one sentence explaining how they decided on the classification.

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

A few notes on teaching this unit

Teach magnetic forces by starting with what students already know, then let them test their ideas through structured experiments. Avoid explaining everything upfront—instead, let observations lead the discussion so students confront misconceptions themselves. Research shows this approach builds deeper understanding than lectures alone.

Successful learning looks like students accurately identifying magnetic materials, predicting pole interactions, and explaining why force changes with distance. They should use terms like attraction, repulsion, and fair test while designing simple experiments with clear evidence.

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Watch Out for These Misconceptions

• During Magnet Testing Stations, watch for students assuming all metals are magnetic, especially when testing coins or aluminium foil.

  Provide a variety of metals at the station, including copper, aluminium, steel, and iron. Ask students to predict and test each one, then discuss why only some respond to the magnet.

• During Pole Identification Challenge, watch for students believing a single-letter marking is enough to identify poles.

  Have students test their marked poles with another magnet and observe attraction or repulsion. Ask them to refine their labels based on results, reinforcing that poles must be verified through interaction.

• During Design a Fair Test, watch for students thinking magnetic force never changes with distance.

  Encourage students to measure how far apart the magnet and object can be while still attracting. Ask them to compare distances for different magnets and explain their findings in terms of force weakening over distance.

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Methods used in this brief

• Stations Rotation