Tablecloth Pull
Dishes mostly stay in place.
Teaching & key ideas
What you do: Pull cloth quickly and horizontally from beneath the dishes.
What students see: Dishes mostly stay in place.
Why it works: Objects resist changes in motion; a quick pull gives little time for friction to accelerate them.
Question to ask: Why didn't the dishes leave with the cloth?
Lesson flow
Predict → demonstrate → observe → briefly explain → ask: Why didn't the dishes leave with the cloth?