Pendulum Wave
The row forms changing wave patterns.
Teaching & key ideas
What you do: Release all pendulums together.
What students see: The row forms changing wave patterns.
Why it works: Different lengths have different periods, so their phases drift apart and realign.
Question to ask: Why do the pendulums stop moving together?
Lesson flow
Predict → demonstrate → observe → briefly explain → ask: Why do the pendulums stop moving together?