Each book describes a different simple machine, explaining how the machine helps make our work easier. Experiments and activities are included.
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A photo essay about the history, development, and impact of automobiles from horseless carriages and Model T Fords to modern high-performance racing cars; featuring detailed cutaway photos showing how the moving parts of a car work.
A photo essay about the history, development, and impact of automobiles from horseless carriages and Model T Fords to modern high-performance racing cars; featuring detailed cutaway photos showing how the moving parts of a car work.
A photo essay about the history, development, and impact of automobiles from horseless carriages and Model T Fords to modern high-performance racing cars; featuring detailed cutaway photos showing how the moving parts of a car work.
