Coat-Hanger Bell Through String
A quiet tap sounds like a huge bell through the strings.
Teaching & key ideas
What you do: Tie strings to hanger, place fingers near ears, and gently tap hanger.
What students see: A quiet tap sounds like a huge bell through the strings.
Why it works: Vibrations travel efficiently through the solid string to the ears.
Question to ask: Why is it louder through the string?
Lesson flow
Predict → demonstrate → observe → briefly explain → ask: Why is it louder through the string?