You've helped them one at a time. The real understanding is how the ideas CONNECT — teach that next.
Pulse (wave basics — frequency, amplitude, wavelength) ×Ring (resonance — an object's big response at its natural frequency)
A singer holds one exact note and a wine glass shatters. Why do Pulse and Ring explain that?
Pulse then says: “Resonance happens at any frequency; matching the natural frequency makes no difference.” — is that right?
The link: resonance is what happens when the driving frequency matches the natural one.
Match the frequency, and it rings.
Meet (interference — two waves adding (constructive) or cancelling (destructive)) ×Loop (standing waves and harmonics — a wave that appears to stand still)
A guitar string vibrates in a fixed pattern with still points along it. How do Meet and Loop connect?
Meet then says: “Standing waves form on their own and never involve two waves overlapping.” — is that right?
The link: a standing wave is interference of a wave with itself.
Overlap a wave with its echo, and it stands still.
Capstone — explain one sound together
Three ideas behind a sound. Bring in the cast member for each.
The basic properties — how fast it wiggles and how big. Who?
Who do you bring in?
Two waves adding up or cancelling out. Who?
Who do you bring in?
A big response when the frequency matches. Who?
Who do you bring in?
The synthesis: the wave's properties, two waves interfering, and resonance at a matched frequency — the physics inside a sound.
