Scientific Inquiry and the Natural World · 6th Class · Forces and Energy · Summer Term

Magnets and Magnetism

Investigate the properties of magnets and magnetic fields.

• NCCA Curriculum Specifications
• NCCA: Primary - Energy and Forces
• NCCA: Primary - Electricity and Magnetism

About This Topic

Magnets create invisible forces that pull or push certain materials, such as iron and steel, without touching them. In 6th class, students identify magnetic poles: north and south poles attract each other, while like poles repel. They map magnetic fields using iron filings or compass needles and compare permanent magnets, which hold their magnetism, with temporary ones formed by rubbing iron or using electric current.

This topic supports the NCCA Primary curriculum strands on Energy and Forces, and Electricity and Magnetism, within the Forces and Energy unit. Students design fair tests to explore attraction strength, field patterns, and material properties. These investigations develop prediction, observation, and evidence-based explanation skills essential for scientific inquiry.

Active learning benefits this topic greatly. When students test everyday objects for magnetism, sprinkle filings to reveal field lines, or build simple electromagnets, they witness forces in action. These concrete experiences clarify abstract concepts, encourage collaborative discussion of results, and make inquiry memorable.

Key Questions

1. Explain how magnets attract and repel each other.
2. Differentiate between temporary and permanent magnets.
3. Design an experiment to map the magnetic field of a bar magnet.

Learning Objectives

• Compare the magnetic force of attraction and repulsion between different pole combinations.
• Classify materials as magnetic or non-magnetic based on experimental results.
• Design and conduct an experiment to map the magnetic field lines surrounding a bar magnet.
• Differentiate between the properties of permanent and temporary magnets through observation.

Before You Start

Properties of Materials

Why: Students need to be able to identify and sort objects based on their material composition to test for magnetic properties.

Forces and Motion

Why: Understanding that forces can cause objects to move or change direction is foundational to comprehending magnetic attraction and repulsion.

Key Vocabulary

Magnetism	A physical phenomenon produced by moving electric charges and magnetic dipoles, which results in attractive and repulsive forces.
Magnetic Field	The area around a magnet where its magnetic force can be detected. It is often visualized using iron filings or compasses.
Poles (North and South)	The two ends of a magnet where the magnetic force is strongest. Like poles repel each other, and opposite poles attract.
Permanent Magnet	A material that retains its magnetism for a long time after being magnetized, such as a refrigerator magnet.
Temporary Magnet	A magnet that is only magnetic when it is in the presence of a magnetic field or electric current, losing its magnetism when the field is removed.

Watch Out for These Misconceptions

Common Misconception

Magnets attract all metals.

What to Teach Instead

Only ferromagnetic materials like iron, nickel, and cobalt respond. Hands-on testing of aluminum, copper, and plastic alongside iron lets students classify objects based on evidence and revise ideas through group comparison.

Common Misconception

Magnetic fields are visible or only around the poles.

What to Teach Instead

Fields surround the entire magnet invisibly. Sprinkling iron filings or using compasses in pairs reveals curved lines connecting poles, helping students visualize and map the full extent.

Common Misconception

All magnets have the same strength.

What to Teach Instead

Strength varies by material and size. Comparing multiple magnets with paperclip chains in small groups provides data to rank them, building understanding of variables in experiments.

Active Learning Ideas

Stations Rotation: Magnet Properties Stations

Prepare four stations: pole identification with hanging magnets, material testing with assorted objects, strength comparison using paperclips, and field mapping with compasses. Small groups rotate every 10 minutes, predict outcomes, test, and record data on worksheets. Conclude with a class share-out of patterns noticed.

45 min·Small Groups

Pairs: Iron Filings Field Mapper

Place a bar magnet under white paper, sprinkle iron filings evenly, and tap gently to align. Partners observe and draw field lines from pole to pole. Discuss how the pattern shows invisible forces extending outward.

20 min·Pairs

Small Groups: Temporary Magnet Maker

Stroke an iron nail repeatedly with a permanent magnet in one direction. Test if the nail attracts paperclips, then observe if magnetism fades over time. Groups record steps and results for fair testing.

30 min·Small Groups

Whole Class: Electromagnet Build

Demonstrate coiling insulated wire around a nail, connecting to a battery and switch. Turn on to pick up paperclips, then off to release. Students predict and note what makes it temporary.

15 min·Whole Class

Real-World Connections

• Engineers use magnetic fields in the design of powerful MRI machines at hospitals, which use strong magnetic fields to create detailed images of the inside of the human body.
• Scrap metal yards utilize large electromagnets, which are temporary magnets, to lift and sort tons of steel and iron from discarded vehicles and machinery.
• The development of magnetic levitation (maglev) trains, like those in Shanghai, relies on understanding magnetic repulsion to allow trains to float above the tracks, reducing friction and increasing speed.

Assessment Ideas

Exit Ticket

Provide students with a bar magnet and a collection of objects (e.g., paperclip, coin, plastic ruler, iron nail). Ask them to list which objects are attracted to the magnet and explain why. Then, have them draw a simple diagram showing the poles of the magnet and the direction of its magnetic field.

Quick Check

Ask students to hold up one finger for 'attract' and two fingers for 'repel' as you describe different pole interactions (e.g., North to South, South to South). Then, present scenarios of materials and ask them to hold up a 'M' for magnetic or 'N' for non-magnetic.

Discussion Prompt

Pose the question: 'Imagine you have a metal spoon and an iron nail. How could you use a permanent magnet to determine which is which, and how would you test if the spoon becomes a temporary magnet?' Facilitate a class discussion where students share their experimental ideas.

Frequently Asked Questions

How do I teach magnetic poles to 6th class?

Use bar magnets and string to suspend them freely; students watch opposite poles snap together and like poles push apart. Label poles with markers, then pair magnets to confirm rules. Follow with compass work to find Earth's magnetic north, linking to real-world navigation. This builds from observation to rule-making in 20 minutes.

What is the difference between temporary and permanent magnets?

Permanent magnets, like bar or horseshoe types, retain magnetism without external help. Temporary ones lose it quickly: stroked iron holds briefly, electromagnets need current. Students experiment by making both, timing paperclip pickup duration, and discussing atomic alignment in a quick class chart.

How can active learning help students understand magnetic fields?

Active methods like iron filings on paper over magnets or compass arrays make invisible fields visible through patterns. Small groups predict, test, and sketch lines, then compare drawings to refine models. This hands-on approach shifts students from rote recall to evidence-driven insights, with 80% better retention in follow-up quizzes.

What safety rules for magnets in primary classroom?

Supervise strong magnets to prevent pinching fingers or snapping together. Keep away from electronics and pacemakers. Store separately by poles to avoid demagnetizing. Teach rules upfront: no throwing, handle gently. These steps ensure safe, focused exploration for all students.