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The Science You Actually Need

Why Round Rolls

What the Axle Does, and Why Wheels Beat Dragging

Vehicles Are Built for Where They Travel

Check Your Understanding — The Science

The wheel-and-axle science every teacher needs — why round rolls, what an axle does, how wheels reduce friction, and how vehicles are matched to land, water, and air — in plain, preschool-honest language.

You don't need an engineering 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.

Wheel and Vehicle Science Every Teacher Should Know

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