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00:55:52
This week's secret ingredient was triangles! 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."

00:37:59
This week's secret ingredient was leaves! This week's secret ingredient was triangles! 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."

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!

00:04:40
When this chemistry teacher entered her portable classroom as a new teacher, she was fresh from West Africa—and there was a lot she didn’t know.

00:00:36
See slow-motion footage of flames licking through ice during a demonstration by Eric Muller of the Exploratorium's Teacher Institute. Can you guess what he added to the bottom of the vessel before lighting it?

00:52:10
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." This week's secret ingredient: batteries.

00:49:07
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." This week's secret ingredient was oil.

00:54:21
Cheer on the competitors in this zany science cook-off. This week's secret ingredient was nuts and bolts

00:07:13
A veteran teacher describes his first year teaching in a tough school district. This episode is one of several “first-year” stories from people in a difficult profession.