Grades K & up. No incubator required! Now, students can see the day-by-day development of a chick by cracking open this set of 21 eggs. Eggs 1-20 contain realistic illustrations. Final egg opens to reveal a plastic 3-D chick. Perfect for teaching the chick life cycle and related vocabulary in life science lessons. Multilingual activity guide includes definitions, chicken facts and a blackline master to label. Eggs and plastic storage tray are labeled for self-checking and easy organization. Durable plastic eggs measure 2 ? "L each.