Spin the Rattleback clockwise and watch it stop, rattle up and down and then spin in the other direction! A science curiosity whose ancient and mysterious properties capture the attention of all ages. NC-14685
A fun creature shaped as an eagle in flight and which can balance by its beak on most surfaces, including your fingertip. Wingspread is 7 inches. NC-11799
This timeless novelty is a scientific wonder, using the properties of thermodynamics to keep it in constant bobbing motion. NC-3905
Watch the liquid rise and boil in the tube of the hand boiler as you hold it in your hand. Ages 14+. C-1444
