These mind-stretching quizzes will get the whole class involved. Includes optical illusions, word games, and more! Each card pack provides 20 new lessons, all featuring beautiful color artwork and photography that bring the information to life. Plus, each pack includes a blank card, so you can create lessons on any topic you want your child to learn about. Ages 8 and up. 100% compatible with all GeoSafari and GeoSafari Jr. Learning Systems.