Classroom mode

A question for the whole room

One story to open. A room full of ideas to test.

Ready in three steps

  1. Open the story.Read and try the first pages together.
  2. Pause for a prediction.At the story’s question, read its choices aloud. Invite a vote and ask, “What makes you think that?”
  3. Run it. Watch. Wonder.Choose the class’s prediction, run the experiment, and compare what happened with your guesses.

Different guesses are welcome. The experiment gives everyone something to rethink.

Something to put on paper

A one-page prediction and observation sheet. No answers included.

After the experiment: discussion notes

Talk about what happened

  • Why record the beam before stirring instead of relying on memory?
  • Which variable changes in the hidden experiment, and which conditions stay matched?
  • After watching, explain how the molecular picture accounts for both the clear-looking cup and the measured result.

Where it shows up in real life

  • Stirring sugar into a breakfast drink until no cube is visible
  • Salt mixing into pasta water
  • Crystals appearing after a drop of salty water dries

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