What this lesson teaches
Magnetic fields and field lines.
Map magnetic field lines using iron filings!
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Magnetic fields and field lines.
Magnetic fields are invisible — the most significant barrier to understanding them. Iron filing patterns make field lines tactile and visual simultaneously, converting an abstract concept into a concrete object that students can observe, sketch, and remember as a direct sensory experience.
1. Place magnet under paper. 2. Sprinkle iron filings. 3. Tap gently. 4. Draw pattern. 5. Try horseshoe.