4 years & up. Miracle Snow lasts for weeks, expands up to 100 times its size, is totally reusable, and looks like real snow! Simply stir the powder into water and watch it turn into fluffy, sparkling, shiny snow! Learn about color mixing, mass, evaporation, and much more. Classroom kit contains enough materials for 12 children and the 1 lb. bucket makes more than 5 gallons of snow. Each available separately.