Interleaved Books Won't Pull Apart
Loose pages become incredibly hard to separate.
Teaching & key ideas
What you do: Interleave pages, then try pulling books apart.
What students see: Loose pages become incredibly hard to separate.
Why it works: Many small friction forces add together.
Question to ask: How can paper hold this strongly with no glue?
Lesson flow
Predict → demonstrate → observe → briefly explain → ask: How can paper hold this strongly with no glue?