Science By Me Science Mega Pack 4 Make Your Own Crystal Geode STEM Kits Ages 8+ Science By Me Science Mega Pack features four individual Make Your Own Crystal Geode kits. This STEM-approved set includes everything needed to create awesome crystal formations in heart, star, and geometric shapes. Each kit comes with potassium aluminum sulfate, plaster, coloring dye, a geode shell mold, measuring beaker, wooden spatula, goggles, and instructions. Perfect for young scientists aged 8 and up, this educational activity provides a hands-on learning experience in chemistry and geology.