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How does Volume and Shape Affect Floating? |
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How do Shapes of Lenses affect an Image? |
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What is the Science of Polymers? |
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What are the Plants and Animals of the Rocky Intertidal Zone? |
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$225.00 |
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What are Light Waves? |
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$225.00 |
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What are Levers and Wheels? |
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$225.00 |
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