Stone Age Geometry: Lines |
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4.4 |
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Stone Age Geometry: Spheres |
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4.5 |
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Stone Age Geometry: Squares |
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4.1 |
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Pulling Up: The Pulley |
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4.4 |
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Rolling Along: The Wheel and Axle |
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4.4 |
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Sloping Up and Down: The Inclined Plane |
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4.2 |
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Splitting Apart: The Wedge |
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4.4 |
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Winding Around: The Screw |
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4.5 |
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Stone Age Geometry: Triangles |
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4.3 |
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Pressing Down: The Lever |
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4.4 |
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Alone in the Arctic |
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4.3 |
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Swept Away by the Storm |
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5.0 |
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