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
- Why can a color change be evidence about an otherwise clear liquid?
- What does the unchanged purple control cup add to the experiment?
- Why is cabbage indicator useful for broad comparisons but weaker than calibrated pH paper for an exact measurement?
Where it shows up in real life
- pH test strips used for swimming pools and aquariums
- universal indicator solution in a science classroom
- plant pigments whose appearance depends on their chemical surroundings
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