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How do Levers Work? |
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What is the Science of Static Electricity? |
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What is the Science of Color? |
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What are some Plant Adaptations to Water Habitats? |
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Can we Design New Machines? |
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What Causes the Changes in Our Moon? |
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What are my 5 Senses? |
$595.00 |
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$595.00 |
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