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1by Walker, Sally M.Table of Contents: “...Be a word detective -- Work -- Simple machines -- In the park -- Safari -- Snack time -- Making...”
Published 2002
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2by Walker, Sally M.Table of Contents: “...Be a word detective -- Work -- Machines -- Inclined planes -- Gravity and friction -- Wedges...”
Published 2002
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3by Walker, Sally M.Table of Contents: “...Be a word detective -- Work -- Machines -- What is a screw? -- How screws help us -- Different...”
Published 2002
Connect to the full text of this electronic book
eBook