DavidGlover Books
Levers
By DavidGlover
Introduces the principles of levers as simple machines, using examples from everyday life.
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Wheels and cranks
By DavidGlover
Introduces the principles of wheels and cranks as simple machines, using examples from everyday life.
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Springs
By DavidGlover
Introduces the principles of springs as simple machines, using examples from everyday life.
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Pulleys and gears
By DavidGlover
Introduces the principles of pulleys and gears as simple machines, using examples from everyday life.
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Screws
By DavidGlover
Introduces the principles of screws as simple machines, using examples from everyday life.
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