"Presents information on simple machines with a focus on pulleys. Explains what a pulley is, how pulleys work, and includes examples of past and present uses. Intended for third to fifth grade students"--Provided by publisher.
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"Presents information on simple machines with a focus on pulleys. Explains what a pulley is, how pulleys work, and includes examples of past and present uses. Intended for third to fifth grade students"--Provided by publisher.
Read Less
