STEM
September 4-September 10, 2013 |
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Find the latest STEM resources from Iowa Public Television.
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Global Warming: The Hydrogen Car
Grade Range: 3-12
Is the hydrogen car the answer to global warming? This video segment adapted from NOVA/FRONTLINE looks at the pros and cons of this developing technology.
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Scientist Profile: Motorcycle Engineers
Grade Range: 4-6 
Bruce Roberts always loved solving the "puzzles" given to him in math classes. He now enjoys daily mathematical challenges as an engineer for Harley Davidson Motorcycles in Milwaukee, Wisconsin. Along with his math skills, Bruce uses the latest cool computer programs to dream up the safest, fastest, and best designs for these powerful "bikes." Rick found a new appreciation for math, using it every day to test motorcycle components.
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The Rise of Social Networking
Grade Range: 6-12
If you use online social networks, you're not alone. In this video from FRONTLINE: "digital_nation," teens talk about how they connect with friends online through sites like Facebook and MySpace, and what kind of information they share.
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Galaxies
Grade Range: All
This Building Block video features an animation of a voyage away from the Milky Way galaxy, and past other galaxies, to a view of the Virgo supercluster.
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Railroad Repair Using Decimal Addition
Grade Range: 3-6
In this Cyberchase interactive game, Hacker has removed some of the tracks on the Trans-Cyberspace Railroad. The challenge is to repair the tracks so that the Cybertrain can get back to the central station. A set of spare tracks that range in length from 0.1 to 1.0 will be used to fill in the gaps. In many cases it will be necessary to use a combination of two or three pieces to fill in the missing part of the track. All the gaps on the screen must be filled before the train will move.
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Measuring Length Precisely
Grade Range: 3-6
In this video segment from Cyberchase, the CyberSquad must remove a voice box from a giant statue of Hacker. The CyberSquad prepares to lower Digit down on a rope that will reach the voice box, but they need an exact measurement of the distance to the voice box so that Digit won't touch the laser alarms which protect it. They try to figure out how long the rope must be by using what they know about other measurements and the relationships among them.
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Cause and Effect Relationships - Silence of the Bees
Grade Range: 6-8
Students watch two video segments in order to take notes and answer questions about the disappearance of bees across the United States. Using this information, students write an essay that synthesizes the cause and effect relationship the disappearance of bees will cause.
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The Disappearing Aral Sea
Grade Range: 6-12
Human activity has reshaped the face of Earth in dramatic, and often unintended, ways. In this visualization adapted from NASA, satellite images show how water diverted from the Aral Sea for agriculture has caused the land-locked lake to shrink considerably over a short period of time. In just 30 years, this lake has lost more than 60 percent of its water. Barring change, the Aral Sea may disappear entirely by 2020.
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