Vortex Cannon Puff
A puff travels far and knocks objects over.
Teaching & key ideas
What you do: Tap the diaphragm toward tissue or light cups.
What students see: A puff travels far and knocks objects over.
Why it works: The opening forms a ring-shaped vortex carrying momentum.
Question to ask: Can moving air have a shape?
Lesson flow
Predict → demonstrate → observe → briefly explain → ask: Can moving air have a shape?