Information Investigators: Non-Fiction and Research · Term 2

Using Headings and Subheadings

Students will analyze how headings and subheadings organize information and help readers find key details.

About This Topic

Magnetic interactions introduce Grade 3 students to the concept of non-contact forces. Students explore how magnets can pull (attract) or push (repel) objects without touching them, and they identify which materials are magnetic. In Ontario, this topic connects to practical applications like compasses and household tools. It encourages students to think about 'invisible' forces that govern the physical world around them.

By testing different materials and observing how magnetic fields work, students develop their inquiry and prediction skills. They learn that magnetism is not just a 'magic' trick but a predictable force with specific rules. This topic particularly benefits from hands-on, student-centered approaches where learners can test their own hypotheses and discover the properties of magnets through trial and error.

Active Learning Ideas

Stations Rotation: Magnetic Explorers

Set up stations where students test which classroom objects are magnetic, use iron filings to see invisible magnetic fields, and try to move a paperclip through a table using a magnet underneath.

⏱ 50 min·Small Groups

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Simulation Game: Human Magnets

Students wear 'North' or 'South' labels. They move around the room and must try to 'connect' with others; if they meet a matching pole, they must push away, but if they meet an opposite pole, they link arms.

⏱ 20 min·Whole Class

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Inquiry Circle: The Floating Paperclip

Groups are challenged to make a paperclip 'hover' in the air using a magnet and string. They must experiment with the distance between the magnet and the clip to find the 'sweet spot' of the magnetic field.

⏱ 30 min·Small Groups

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Watch Out for These Misconceptions

Common Misconception

All metals are magnetic.

What to Teach Instead

Many students think anything shiny or metallic will stick to a magnet. A hands-on sorting task with copper pennies, aluminum foil, and steel nails helps them discover that only certain metals (like iron, nickel, and cobalt) are magnetic.

Common Misconception

Magnets only work through air.

What to Teach Instead

Students often believe a barrier will stop a magnet. Testing magnets through water, paper, or plastic during a station rotation proves that magnetic forces can pass through many non-magnetic materials.

Frequently Asked Questions

What are the best types of magnets for Grade 3?

Strong ceramic bar magnets or horseshoe magnets are best. They clearly show the North and South poles, which is essential for teaching attraction and repulsion. Avoid small button magnets as they can be a safety hazard.

How do magnets relate to the Earth?

The Earth acts like a giant magnet with its own magnetic field. This is why compasses work. You can explain that the needle of a compass is a small magnet that aligns with the Earth's magnetic poles to help people find their way.

How can active learning help students understand magnetic forces?

Since magnetic forces are invisible, students need to 'feel' the push and pull to believe it. Active learning allows them to experience the resistance of two North poles repelling, which creates a much stronger mental model than just reading about it.

Are there any Indigenous connections to magnetism?

While magnetism is a physical science concept, you can discuss how Indigenous navigators used the stars and natural landmarks for travel, and how the introduction of the magnetic compass changed navigation in Canada's history.

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