National Geographic : 1962 Sep
science for children only WENTY-SEVEN exhibits in the U. S . Pavilion's Junior Laboratory of Sci ence give youngsters be tween 8 and 13 an oppor tunity to learn the basic principles of science by playing a variety of games. Spinning gyroscope turns a merry-go-round. When boys try to tilt the gyro, it resists and trans lates their exertions into a rotary motion that whirls the platform on which they stand. Hefting grapefruit at lower left, a boy learns that an object on earth (fore ground) is six times heavier than its twin on the moon. Levers produce the appar ent difference in gravities. BBIA © N.G.S. Ant colonies, living out their busy lives under glass, intrigue young vis itors. Insects in the fore ground are harvesters, all offspring of a queen that started the colony in June, 1960. Jungle-gym climb adds to the fun of ant-watch k ing. Youngsters who en ter the boxlike hideaway get another view of the colonies, which include formica and carpenter ants. Children watch the insects forage for honey, lay eggs, and bury dead.