"Is it easier to lift toys with a wheel and axle or a wedge? Readers will learn about how simple machines work in this book for early readers" --
Provided by publisher.
"Is it easier to lift toys with a wheel and axle or a wedge? Readers will learn about how simple machines work in this book for early readers" --
Provided by publisher.
General Note
Includes index.
Content Note
Moving day -- Emil uses wheels and axles -- Emil uses a wedge -- A wedge helps Emil!.