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This week's secret ingredient was lightbulbs! Cheer on the competitors in this zany science cook-off. Teachers compete before a live audience at the Exploratorium for the revered title, "Iron Science Teacher."

00:37:00
Cheer on the competitors in this zany science cook-off. Teachers compete before a live audience at the Exploratorium for the revered title, "Iron Science Teacher." The Exploratorium's Iron Science Teacher competition showcases science teachers as they devise demonstrations around a particular "secret" ingredient—and today's secret ingredient was oil!

00:01:22
In June, 2010, the Exploratorium will launch it's newest exhibition, Geometry Playground. Check out this teaser clip and come back for more on June 25th, 2010.

00:03:20
This April Fools’ Day After Dark event exposed people’s threshold for taking chances. For example, visitors could test their belief in the laws of physics as a bowling ball swung toward them. They could also tackle a climbing wall, try their luck at casino games, and see if they had the nerve to carry out the instructions on a card they were given.

00:08:42
Exploratorium graphic artist David Barker describes the physics of baseball bats, and makes some sweet music in the process!

00:05:23
Our host, Stephanie Chasteen, shares some more fun facts and activities having to do with the science of sound.

00:08:30
TI staff educator Lori Lambertson explains her philosophy of integrating math and science in the classroom, and how she puts it into practice.

00:22:45
Join Exploratorium Senior Scientist Paul Doherty and visiting scientist Alfredo Mateus for an exploration of hands-on demos. In today's webcast, Paul and Alfredo will be looking at a voice activated chemical reaction and what happens when you heat plastic in water!

00:05:28
Sometimes kids don’t have much experience with nature. TI teacher coach Kim Marie Hansen recounts how she got her inner city students outside and observing the world by using nature journals.

00:08:53
A story can help make a subject come alive for your students. TI teacher coach Carol Murphy talks about the myriad ways she’s used storytelling in her science classes.