Blue Marble
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Blue Marble
Slime Green Lab
$9.99| /The National Geographic Glow-in-the-Dark Slime Lab STEM Science Kit brings out your child's inner mad scientist by letting them create their own g...
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Blue Marble
Rock Tumbler Explorer Series
$69.99| /It's all about what's on the inside. Ordinary rocks turn into polished gemstones, showing kids that earth's treasures are all around us. High-quali...
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