What this lesson teaches
Refraction of light.
Science in Action
Light Refraction Pencil
Observe light refraction with a pencil in water!
Duration20 min
Age GroupAges 11–14
DifficultyIntermediate
SubjectScience
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The learning connection
A visually striking anomaly — a pencil that appears bent — creates cognitive dissonance that motivates explanation-seeking. Anomaly-driven learning activates deeper information processing than normal demonstrations, making the concept of refraction more personally owned.
Try it with your learner
1. Half fill glass. 2. Put pencil in. 3. Look from side. 4. Draw what you see. 5. Explain why.