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The building possibilities in this modular engineering system are virtually limitless
When the Krahder ended their raid
Year Released: 2015
test tubes
Thames and Kosmos Crystal Growing 22 The building possibilities in thisGrow dozens of dazzling crystals and conduct 15 illuminating experiments with this classic science kit. Experiment with four chemically different crystals each with different properties, including potassium alum crystals that form regular octahedrons, rapidly growing sodium sulfate crystals, long needle shaped sodium acetate crystals, and plaster which is made from gypsum crystals. Mold fun plaster shapes, including stars, lightning bolts, dolphins,
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