Soap Film Minimal Surfaces
Unexpected interior surfaces form.
Teaching & key ideas
What you do: Dip frames and compare film geometry.
What students see: Unexpected interior surfaces form.
Why it works: Surface tension minimizes surface area while satisfying boundaries.
Question to ask: Why does soap film solve a geometry problem by itself?
Lesson flow
Predict → demonstrate → observe → briefly explain → ask: Why does soap film solve a geometry problem by itself?