These high quality slides are prepared with unique specimens designed for microscope use. At the beginner to intermediate biology level, these slides are ideal for children up to age 15, and are perfect for classes, home schooling, or just for fun! Contains 72 uniquely prepared specimens, including plants, insects, food, human and animal blood cells, constrction materials, household products, and more. 24 shatterproof plastic slides. CPSIA approved. Grades K+.