Low-cost, teacher-tested activities for the classroom and the curious.
Science of Cooking • Explore the science behind food and cooking with recipes, activities, and Webcasts.
Use this handy conversion calculator to convert between the many units found in recipes.
Make it grow . . . bigger, lusher, juicier.
Why is your shadow longer in winter than in summer? Grab a basketball and some paperclips and find out!
Listen to bird songs and try to figure out which are songs, which are companion calls, and which are alarms.
Are you quick enough to hit a 90 mph fastball?
Can you trust your own memory? Find out with this activity.
Your guide to the Northern and Southern Lights (also in 'Observatory')
Pier 15 (Embarcadero at Green Street)San Francisco, CA 94111(415) 528-4444
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