Hee-Ju Lee/Eun-Hee Kim
Construyamos una pirámide: las máquinas simples
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$19.95
Describes how simple machines, such as levers, pulleys, incline planes, and wheels are used to make work easier. Gr 2-5 Guided Reading Level O
Santillana: Altea (2012) Paperback 31pp. ISBN 9781641012133
