Reviewed for High School, 2007

Like a lava lamp that conveys the weather, this little contraption also dishes out some great lessons in science. The set includes a wooden base, a hand-blown glass barometer with a frosted world map, and a Galileo thermometer. The weather ball, or storm glass, is regarded as the oldest barometer in the world. Plain and simple, it tells barometric pressure: a low level of liquid in the glass ball indicates high pressure and fair weather, a high level means take your umbrella. The accompanying thermometer is a liquid tube with five colored bulbs that rise and sink depending on warmth. When the temperature rises, the liquid in the tube becomes less dense and the bulbs sink. When the temperature drops, the bulbs rise from the bottom. This is bubbly a parent can get behind. (Edmund Scientific, $29.95)