Clickory

Classroom mode

Run it in class

How can a damaged message heal itself?

Show of hands — before you project anything

Why do a bad row and bad column give two coordinates instead of two separate guesses?

  • 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

  • Why do a bad row and bad column give two coordinates instead of two separate guesses?
  • What is the difference between detecting damage and knowing exactly how to repair it?
  • What would you trade for a code that protects against more possible mistakes?

Where it shows up in real life

  • A scratched QR code that still scans
  • A download corrected over a noisy connection
  • Computer memory that quietly corrects a flipped bit

A prediction-first worksheet — no answer key.

zero prep · no login · any projector

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