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Levering: 1 - 2 hverdage

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  • - The Lever
    af Gerry Bailey
    108,95 kr.

    "Pressing Down explores the benefits and uses of the lever. RobbO and RobbEE learn how a lever can be formed in three different ways to do different kinds of work--lift and lower, separate, and open."--

  • - The Pulley
    af Gerry Bailey
    108,95 kr.

    Explores the benefits and uses of the pulley.

  • - The Wedge
    af Gerry Bailey
    108,95 kr.

    "Splitting Apart explores the benefits and uses of the wedge. RobbO and RobbEE need to build a wedge-shaped machine to move the snow piled outside their workshop. They find lots of other uses for a wedge, too."--

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