"Through carefully leveled text and powerful images, explores ramps a useful simple machine"--
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Details
ISBN: 9781781214008 (hc)
Physical Description:24 pages : color illustrations ; 21 cm.print
Publisher:Tucson, AZ : Brown Bear Books, c2018.
Bibliography, etc. Note: Includes bibliographical references and index.
Formatted Contents Note: What is a ramp? -- What are machines? -- Ramps and forces -- How steep? -- Ramps in the past -- Ramps today -- Everyday ramps -- Compound machines -- Spot the ramp! -- Try it!