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For parents and teachers

Small voltages and circuits

Choose low-voltage aids for use with an adult. These resources do not cover measurements or experiments on mains wiring.

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After the film, explain what happened in your own words. Draw an example and choose a question to explore together.

What could help?

Try after watching

A short activity with an adult, matched to the film’s topic. Expand the instructions.

Experiment

How does a shadow change?

Safety

With an adult. Never shine into eyes; use a cool LED flashlight, no lasers or candles.

Materials

LED flashlight, opaque block, light-colored wall.

Steps

  1. Put the block between the flashlight and wall.
  2. Keep the block still; move the flashlight left and right. Compare shadow positions.
  3. Move the flashlight closer to the block, then farther away. Compare shadow sizes.

What can you notice?

The block intercepts some light. The source position changes the shadow’s direction and size.

Explanation sources

Instructions written by STEP BY STEP KIDS TV using the sources listed.

Watch a related film: The Sun’s Winter Clock: Why Are Days Shorter in Poland? ↗

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