Educational Insights MicroPro Microscope set is ideal for ages 8 - 18 and has a die-cast metal body that makes it ideal for classroom use. Set allows children to learn about cells as well as crystals. Age group and grade: Ages 8 - 18 and grades 3rd - 12th. Type: Earth science. Helps in investigating everything from cells to crystals. Perfect for classroom use, the die-cast metal body, glass eyepieces. Built in light and rack and pinion focusing help deliver bright, clear images. Small parts, not for children under 3 years. Batteries included. With the GeoVision MicroPro, young scientists can investigate everything from cells to crystals!. Perfect for classroom use, the die-cast metal body, glass eyepieces, and power settings from 50x to 600x provide users with superior precision viewing. 48-piece kit has professionally prepared slides and everything users need to make their own specimen slides; requires 2 "AA" batteries for light, not included. MicroPro microscope set for grade 3rd - 12th helps in making your own specimen slides.