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00:00:25
An introduction to the Ice Balloons activity, in which learners explore globes of frozen water and learn how to ask and then answer 'investigable' questions.

00:07:39
A detailed demonstration of how to do the Ice Balloons activity, including a discussion of materials needed and strategies for getting learners to ask and then investigate questions about what they are seeing.

00:01:03
The science and pedagogy behind this activity, including a discussion of concepts such as density, temperature, thermal conductivity, center of mass, freezing point depression, heat capacity, and the characteristics of the states of water, water vapor, and ice. Also describes strategies for observing, asking questions, and then choosing a question to investigate further.

00:01:30
In this activity, you'll explore a frozen water balloon to learn how to ask investigable questions and how to use everyday objects to do experiments to answer those questions.

00:06:19
TI staff educator and math enthusiast Lori Lambertson describes how to find her favorite number.

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.

00:22:45
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!

00:00:44
This is a time-lapse movie of a chain reaction activity presented at the Exploratorium booth during Maker Faire 2009. Participants were asked to build a portion of a collective chain reaction contraption, which was set off twice during the day. Photos were taken every 30 seconds and then joined in a 24 fps movie.

00:00:36
This is a time-lapse movie of a chain reaction activity presented at the Exploratorium booth during Maker Faire 2009. Participants were asked to build a portion of a collective chain reaction contraption, which was set off twice during the day. Photos were taken every 30 seconds and then joined in a 24 fps movie.