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What is the Science of Crystals? |
$225.00 |
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$225.00 |
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How Does the Earth Move to Make the Changing of the Seasons? |
$225.00 |
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$225.00 |
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When is Harvest Time? |
$175.00 |
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$175.00 |
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Does Water Mix with Sand or Dirt? |
$225.00 |
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$225.00 |
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How Do Colors Mix? |
$595.00 |
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$595.00 |
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What are Phase Changes? |
$225.00 |
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$225.00 |
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What is Water Made of? |
$175.00 |
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$175.00 |
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