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Films · Science for kids · Bats

Explainer for kids

Seeing with your ears

The end

Seeing with your ears

The bat calls, listens for the echo and knows from the time how far away the moth is. As it flies in, it calls faster and faster.

Chapter 1 · Call and listen

Try the app yourself

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Seeing with your ears

Science for kids · Bats

NewOct 18, 2026 · 3 chapters

An explainer film for kids in three chapters: how a bat finds a moth in the dark, why it calls faster and faster as it catches it, and where people copy the echo trick. Pause anywhere and ask.

How a film works on heyprof

Every film here listens. Pause it, ask it questions and let it continue with your own examples.

  1. PauseTap pause or press the space bar. The film waits right at that moment.
  2. AskTap “Ask” and type what you want to know. The answer comes inside the film, with picture and voice.
  3. Steer itTell it what to show, for example “Do this with z = 2 − 3i”. The film sets up the app and works it out.
  4. Try it yourselfWhile it is paused, drag points and sliders yourself. “Continue” takes you back into the film.

Without an account: five questions per visit. With an account you can also ask by voice.

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