Science · Foundation · Push and Pull · Term 4

Magnetism and Electromagnetism

Students will explore the nature of magnetic fields, permanent magnets, and the relationship between electricity and magnetism, including the principles of electromagnets.

• ACARA Content Descriptions
• AC9S8U05
• AC9S9U05

About This Topic

Foundation students explore magnetism as a push-pull force in the unit. They handle permanent magnets to attract iron objects like paperclips and repel like poles. Using iron filings on paper over a magnet, they observe field patterns. Students then build simple electromagnets by wrapping wire around a nail, connecting to a battery, and testing attraction, linking electricity to magnetism.

This topic fits ACARA standards AC9S8U05 and AC9S9U05, adapted for early learners, by introducing forces and fields through play-based inquiry. It connects to daily life, like fridge magnets or train tracks, and builds skills in prediction, observation, and safe tool use. Vocabulary such as attract, repel, north pole, and coil emerges naturally from experiments.

Active learning benefits this topic greatly since magnetic fields are invisible. Hands-on tests let students see forces in action, predict outcomes, and adjust coils for stronger magnets. Collaborative builds spark discussion, correct errors in real time, and make abstract ideas concrete and fun.

Key Questions

1. Describe the properties of magnetic fields and how they interact.
2. Explain how an electric current can produce a magnetic field.
3. Analyze the applications of electromagnets in various technologies (e.g., motors, speakers).

Learning Objectives

• Identify the poles of a permanent magnet and demonstrate how like and unlike poles interact.
• Observe and describe the pattern of a magnetic field using iron filings.
• Construct a simple electromagnet and demonstrate its ability to attract magnetic materials.
• Explain that an electric current flowing through a wire creates a magnetic field.

Before You Start

Push and Pull Forces

Why: Students need to understand that forces can push or pull objects to grasp the fundamental nature of magnetic interaction.

Properties of Objects

Why: Identifying magnetic materials like iron is necessary before exploring magnetic attraction and repulsion.

Key Vocabulary

Magnet	An object that produces a magnetic field, which can attract or repel certain materials.
Attract	To pull objects closer together, like when opposite poles of magnets meet.
Repel	To push objects away from each other, like when the same poles of magnets meet.
Magnetic Field	The area around a magnet where its force can be felt. It is invisible but can be shown with iron filings.
Electromagnet	A magnet made by passing an electric current through a coil of wire wrapped around a metal core, like an iron nail.

Watch Out for These Misconceptions

Common Misconception

All metals stick to magnets.

What to Teach Instead

Magnets attract only ferromagnetic materials like iron and steel, not aluminum or copper. Station testing with varied objects lets students classify and discuss patterns, building accurate categories through trial.

Common Misconception

Magnets always attract each other.

What to Teach Instead

Like poles repel, unlike attract. Pair demos with labeled poles and compasses show field interactions. Student-led predictions and observations during rotations correct this via evidence.

Common Misconception

Electromagnets work without electricity.

What to Teach Instead

Current creates the field; disconnecting stops it. Building and switching circuits on/off gives direct cause-effect experience, reinforced by group counts of clip pickups.

Active Learning Ideas

Stations Rotation: Magnet Testing Stations

Prepare stations with bar magnets, ring magnets, paperclips, plastic, wood, and foil. Students predict if items attract or repel, test, and sort into yes/no trays. Rotate groups every 7 minutes and share one finding per station.

35 min·Small Groups

Pairs Build: Electromagnet Challenge

Provide nails, insulated wire, batteries, and paperclips. Pairs wind 20 coils around nail, connect circuit, and count lifted clips. Try more coils or reverse connections to explore strength and direction.

25 min·Pairs

Whole Class: Field Patterns Demo

Place bar magnet under clear tray, sprinkle iron filings, tap gently to reveal lines. Students draw patterns, then test with two magnets to see attraction or repulsion fields.

20 min·Whole Class

Individual: Magnet Prediction Sheets

Students draw objects, circle predict attract/repel, test with given magnet, and color results. Discuss surprises as a class.

15 min·Individual

Real-World Connections

• Scrap metal yards use large electromagnets on cranes to lift and sort heavy iron and steel objects. These magnets can be turned on and off to pick up and drop materials easily.
• Doorbell buttons and electric motors in toys and appliances rely on the principles of electromagnetism. When you press a doorbell, an electric current creates a temporary magnet that strikes a chime.

Assessment Ideas

Exit Ticket

Give students a card with a picture of two magnets. Ask them to draw arrows showing if they attract or repel and write one word (attract or repel) to describe the interaction. For a second card, show a simple electromagnet and ask them to draw one object it could pick up.

Quick Check

During the electromagnet activity, circulate and ask students: 'What happens when you add more coils of wire?' or 'What happens when you connect the battery?' Observe their predictions and explanations.

Discussion Prompt

After building electromagnets, ask: 'How is this magnet different from the bar magnets we used earlier?' Guide the discussion towards the idea that the electromagnet needs electricity to work and can be turned on and off.

Frequently Asked Questions

How to safely introduce electromagnets to Foundation students?

Use low-voltage batteries like AA, thick insulated wire, large nails, and supervise connections closely. Demonstrate first: wrap 15-20 coils, tape ends, attach clips. Students test pickups only after teacher check. This prevents shorts, builds excitement, and teaches circuit basics through guided steps. Emphasize no touching wires during power on.

What household items demonstrate magnetic fields?

Iron filings from craft stores, or fine sand mixed with iron oxide powder, reveal patterns on paper over magnets. Compasses show field direction around bar magnets. Students sprinkle, tap, and draw lines, connecting to poles. These cheap, safe tools make fields visible and link to compass navigation talks.

How can active learning help students understand magnetism?

Active approaches like station rotations and electromagnet builds turn invisible forces visible through prediction, testing, and iteration. Students handle materials, discuss results in pairs, and adjust variables like coil numbers, deepening engagement. This beats passive watching: errors self-correct via evidence, vocabulary sticks from use, and collaboration builds confidence in scientific thinking.

Real-world applications of electromagnets for young kids?

Point to doorbells, where coils click hammers; scrapyard cranes lifting cars; electric motors in fans. Demo a simple crane with electromagnet picking toys. Discuss trains on magnetic tracks. These examples show push-pull in action, spark 'how does it work?' questions, and connect school learning to home tech.