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Growing crystals usually takes days, but with this Quick Crystal Cup Experiment Kit, you can grow them in a few hours! First you make a saturated solution, then you cool it quickly, and soon you have a cup full of spiky, needle-like crystals!
This kit contains the science supplies and safety gear you need to complete the experiment. You supply household items, like water and adult supervision. For the complete materials list and the project details, go here.