Classroom mode
A question for the whole room
One story to open. A room full of ideas to test.
Ready in three steps
- Open the story.Read and try the first pages together.
- Pause for a prediction.At the story’s question, read its choices aloud. Invite a vote and ask, “What makes you think that?”
- 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
- Predict before we test: does a helium balloon float to space, float forever, or pop?
- Predict: as the balloon climbs into thinner air, does it get smaller, stay the same, or swell up?
- Predict: what pushes the balloon up — the helium inside, or the air outside?
Where it shows up in real life
- Weather balloons that swell to house-size and burst near 30 km, then parachute their sensors home
- Blimps and airships, which float on lighter-than-air gas but stay low on purpose
- Deep-sea floats that 'fall up' toward the surface because they're lighter than the water around them
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