Grades K - 5. This fun and memory-boosting game features essential science and nature topics. Players study the pictures-and-facts side of the card for 10 seconds, and then flip to the other side to see how many questions they can answer, for example, "What is the world's largest fish?" or "Have dinosaurs or sharks existed longer?" Game includes 55 cards, a sand timer and 8-sided die. For 1 or more players.