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The Science You Actually Need

Why Things Float — Water Pushes Up

Material, Shape, and Heavy-for-Size

How Boats Float — The Big Payoff

Check Your Understanding — The Science

The buoyancy science every teacher needs — why things float and sink, the roles of material, shape, and heaviness-for-size, and how water pushes up — all in plain, preschool-honest language.

You don't need a physics degree — you need a handful of true, simple ideas you can hold in your head while a child hands you a question. This module gives you exactly that.

Buoyancy Science Every Teacher Should Know

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