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00:39:56
In this zany competition teachers have ten minutes to create a science activity from a special secret ingredient. This week: candles.

00:40:59
In this zany competition teachers have ten minutes to create a science activity from a special secret ingredient. This week: paint.

00:54:10
In this zany competition teachers have ten minutes to create a science activity from a special secret ingredient. This week: sugar.

01:01:45
In this zany competition teachers have ten minutes to create a science activity from a special secret ingredient. This week: baseball equipment.

00:47:04
In this zany competition teachers have ten minutes to create a science activity from a special secret ingredient. This week: plastic water bottles.

00:03:20
PETER WHITEHEAD is an instrument builder, performer, and composer. His singular instruments, often based on folk instruments from around the world, feature unusual found materials. Among his many instruments are the Heart Banjo, made from a baking tin; the Lawn Lyre, made from an old lawnmower and a metal oil pan; and the Spoonharp, made from a five-gallon metal drum, a eucalyptus branch, and kitchen spoons. Originally from England, Whitehead is now based in the San Francisco Bay Area. Founding member of the Mobius Operandi performance group, he also performs regularly with Closer To Carbon, an improvisational trio.

01:05:00
In this zany competition teachers will have ten minutes to create a science activity from a special secret ingredient. This week-fruit!

1:02:13
In this zany competition teachers will have ten minutes to create a science activity from a special St. Patrick's Day secret ingredient-things that are green!

1:17:34
How do opera singers sing loud enough to be heard over an orchestra? Can an opera singer's voice really break a wine glass? What's the difference between a baritone and a soprano? Discover the answers to these questions—and more!—in this presentation for families. Join physicist and composer Dr. Brian Holmes and San Francisco Opera Center Director Sheri Greenawald to explore how the art and science of singing combine in opera.

01:04:45
Watch as Exploratorium staff and local teachers compete for the title of Iron Science Teacher. Each contestant has ten minutes to make a science lesson out of a secret ingredient. Today's secret ingredient-potatoes!