Clickory

Classroom mode

Run it in class

How does a thermometer know how hot it is?

Show of hands — before you project anything

Predict: if we dunk the thermometer in ice, what does the red line do — and how fast?

  • A Way more than you'd guess
  • B About what you'd guess
  • C Way less than you'd guess

Count the votes out loud. Hold them to it — then watch.

Project it (fullscreen)

Discussion prompts

  • Predict: if we dunk the thermometer in ice, what does the red line do — and how fast?
  • Predict: why does a super-skinny tube show the swelling so much better than a fat jar?
  • Predict: what would happen to a thermometer filled with water when it hits 0°C?

Where it shows up in real life

  • Comb-tooth expansion gaps in a bridge's road that give the swelling steel somewhere to grow
  • Power lines sagging lower on a hot day because the metal has expanded
  • A tight jar lid loosening after you run it under hot water

A prediction-first worksheet — no answer key.

zero prep · no login · any projector

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