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Levers
Sian Smith
Paperback (Heinemann, Aug. 1, 2012)Each book in this series focuses on a type of simple mechanism and examines how it is used to make different toys work. This book examines levers and uses simple language and labeled photographs to explain the scientific principles behind their use.
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Levers
Sian Smith
Library Binding (Heinemann, Aug. 1, 2012)Each book in this series focuses on a type of simple mechanism and examines how it is used to make different toys work. This book examines levers and uses simple language and labeled photographs to explain the scientific principles behind their use.
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