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    3. Simple Machines by Cindy Davis [Repost]

    Simple Machines by Cindy Davis [Repost]

    Posted By: Free butterfly
    Date: 18 Mar 2015 12:36:31
    Simple Machines by Cindy Davis [Repost]

    Simple Machines by Cindy Davis
    English | Nov 1, 1998 | ISBN: 155799689X | 80 Pages | PDF | 4 MB

    For hands-on activities about force, work, wheels, pulleys, and inclined planes that connect science with real life, choose Simple Machines. This book, designed with good science and easy teaching in mind, covers these concepts:
    work is done when a force is used to move something over a distance
    some jobs take more work that other jobs
    machines make work easier
    machines may have few, many, or no moving parts
    the lever is a simple machine
    the wheel and axle is a simple machine
    the pulley is a simple machine
    the inclined plane is a simple machine

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