Crack into this fascinating set from Learning Resources to see how a baby chick develops day by day for 21 days! All contained in a handy tray, eggs 1 through 20 feature realistic illustrations of a developing chick embryo, and then "hatch" open egg 21 to see the fully developed chick. Includes multilingual activity guide with definitions, chicken facts, and more. Each egg has a numbered label for self-checking and easy organization. The eggs each measure 7 cm (about 2.75") tall, and the tray is 38 cm x 21 cm (15" x 8.5").