A great STEM toy learn basic science and chemistry while having fun and end up with a great souvenir when you're done .Contains everything you need; crystal powder gypsum base growing container, stir stick, complete instructions, and the Hedgehog. Manufacturered by Schylling. Learn basic scientific concepts science experiments; great after school activity. Perfect for homeschooling completely non-toxic and child safe. An excellent gift for boys and girls ages 8+. Create real crystals at home that will literally grow right in front of your eyes. They fully grow in 24 hours.
Each hedgehog is unique! Dissolve crystal chemicals in boiling water, place the figure and plaster base into the solution, and watch as hedgehog spines grow fully within one day. Includes crystal powder, gypsum base, a growing container, instructions, a stirring stick, and 1 hedgehog figure.