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

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!

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

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

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

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.

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

Kids can be pretty skeptical, which can help them to learn more. Children’s book author David Schwartz shares some of the letters from classes who thought they should double-check the numbers in some of his books.

Staff educator Tory Brady tells you how to make a teaching box—a valuable tool for getting yourself organized to teach a great science unit.

TI staff educator Eric Muller shows me how to carbonate my tongue. Blech!