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00:09:39
Exploratorium staff physicist Thomas Humphrey divulges a clever way to measure the speed of sound, and he explains how he’s used that information to measure things in the world.

00:05:54
The ancient Greeks knew about magnets, and they knew about electricity, too. But it wasn’t until the nineteenth century that a connection between the two was discovered. Staff physicist Paul Doherty tells the story of how a professor made the connection…which led to modern motors.

00:07:37
TI staff biologist Karen Kalumuck busts some of the myths about taste, and presents a few fun activities for the classroom.

00:06:28
A stack of blocks seems to defy gravity in this activity by Exploratorium staff educator Don Rathjen.

00:52:40
In recognition of the Exploratorium's 40th anniversary, join us for a special edition of our popular show, Iron Science Teacher. In this zany science cook-off, teachers compete before a live audience at the Exploratorium for the revered title, "Iron Science Teacher." The secret ingredient will be something closely related to our anniversary!

00:04:38
A veteran teacher describes his first year of teaching, and the myriad things he adjusted to while he learned the profession he loves.

00:04:52
What do polarized sunglasses have to do with dog urine? Listen to this curious story from staff physicist Paul Doherty.

00:09:30
TI program participant Mark Hespenheide presents an elegant illustration of free fall using string and paper clips.

00:04:55
How do you give your students the words they need to understand an activity or a topic? TI Staff Educator Modesto Tamez explains his opinion that vocabulary is best given towards the end of a lesson, not at the beginning.

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