Pulleys

by Michael Dahl

Published 1 September 1996
This is one in a series of four books that i ntroduces children to simple, commonly used machines. Each b ook has one full-page photograph per spread accompanied by t wo or three simple sentences giving facts about the featured machine. '

Wheels and Axles

by Michael Dahl

Published 1 September 1996
This is one in a series of four books that i ntroduces children to simple, commonly used machines. Each b ook has one full-page photograph per spread accompanied by t wo or three simple sentences giving facts about the featured machine. '

Levers

by Michael Dahl

Published 1 September 1996
Describes many different kinds, uses, and benefits of levers.

Inclined Planes

by Michael Dahl

Published 1 September 1996