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How can we Design a Car to go Faster? |
$225.00 |
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$225.00 |
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What are Actions & Reactions? |
$225.00 |
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$225.00 |
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What is Surface Tension? |
$225.00 |
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$225.00 |
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What are the Stages of Development of a Butterfly? |
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$225.00 |
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How do we Make Crystals? |
$175.00 |
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$175.00 |
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