Clickory

Classroom mode

Run it in class

How does your phone know exactly where you are?

Show of hands — before you project anything

Predict before testing: is one satellite enough to find one exact spot? Then turn satellites on one at a time and watch the area shrink.

  • 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 before testing: is one satellite enough to find one exact spot? Then turn satellites on one at a time and watch the area shrink.
  • A satellite measures distance from how long its signal took. Predict what happens to your location if a signal is slowed down by bouncing off a building.
  • Three circles cross at one point in flat ground. Predict why finding your height in the air would need a fourth satellite.

Where it shows up in real life

  • The 'you are here' blue dot wobbling on a phone map in a parking lot.
  • A car navigation voice rerouting you after a missed turn.
  • A fitness watch drawing the path you ran or biked.

A prediction-first worksheet — no answer key.

zero prep · no login · any projector

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