Grade 3 · Science · Lesson 21

Magnetic Forces

A magnet is an object that produces a magnetic force — an invisible pull or push that acts on certain materials without touching them. Magnets attract objects made of iron, steel, nickel, and cobalt. Materials that are not attracted to magnets are called non-magnetic.

What this lesson teaches

1Explain what a magnetic force is and how it acts on materials
2Classify common materials as magnetic or non-magnetic
3Identify the two poles of a magnet and describe how they interact

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