Toilet-Paper Air Stream
A long streamer shoots across the room.
Teaching & key ideas
What you do: Direct air over the roll so the paper unspools dramatically.
What students see: A long streamer shoots across the room.
Why it works: Moving air transfers force to the lightweight paper.
Question to ask: Can moving air pull out an entire roll?
Lesson flow
Predict → demonstrate → observe → briefly explain → ask: Can moving air pull out an entire roll?