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omara 3 17 11
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Bulk Density Protocol
The purpose of this resource is to measure the bulk density of each horizon in a soil profile. In the field, students collect three soil samples from each horizon in a soil profile using a container with a measured volume. In the classroom, students weigh the samples, dry them, and weigh them again to determine their dry mass and water content. Students then sieve the dry soil samples and measure the mass and volume of any rocks and material with dimensions greater than 2 mm. Students use the Bu
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What You Need To Have a Great Looking Home Garden
Veronica Davis
When the weather starts warming up, many people start getting the yard ready for spending more time outdoors. A beautiful garden enhances the atmosphere, as well as brings many benefits. Here's a […]

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Teacher/Student Responses
In this session, participants see how five middle-level teachers use both formal and informal student/teacher conferences to monitor their students’ progress and help them improve as writers. (58:25)
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Ovadia Baruch - At the Jewish Museum and Synagogue in Salonika
Ovadia Baruch discusses the Jewish community that existed in Salonika, Greece, before World War II. For more information, click here: http://www1.yadvashem.org/yv/en/education/learning_environments/salonika/salonika.asp
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Egg-cellent Landing
The purpose of this activity is to recreate the classic egg-drop experiment with an analogy to the Mars rover landing. The concept of terminal velocity will be introduced, and students will perform several velocity calculations. Also, students will have to design and build their lander within a pre-determined budget to help reinforce a real-world design scenario.
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4.2.1 Microphone
BBC News 24, Sky News, CNN – we live in an era where news has become almost instantaneous. This unit will look at how news is gathered and the technology used for its dissemination. You will also be encouraged to examine how information might be manipulated by questioning its reliability.
Author(s): The Open University

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Except for third party materials and otherwise stated (see http://www.open.ac.uk/conditions terms and conditions), this content is made available under a http://creativecommons.org/licenses/by-nc-sa/2

Plates on the Move
This fun Web article is part of OLogy, where kids can collect virtual trading cards and create projects with them. Here, they learn about the Earth's outer shell and its constant movement. It begins with an overview that explains tectonic plates and the four things (slip, spreading, collision, and subduction) that can happen when the edges of the plates meet.
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Progression of Hurricane Jeanne, 2004 (WMS)
Hurricane Jeanne was the fourth hurricane to hit Florida during the 2004 hurricane season. This set of images shows the progression of the hurricane as it approached Florida from the Atlantic Ocean and the Caribbean Sea. When it hit the Florida coast on September 26, Jeanne was a Category 3 storm with sustained winds near 115 miles per hour.
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Multiple Slit Diffraction Model
The EJS Multiple Slit Diffraction model allows the user to simulate Fraunhofer diffraction through single or multiple slits. The user can modify the number of slits, the slit width, the slit separation and the wavelength of the incident light. The scale of the diffraction pattern can also be changed and a plot of the light intensity can be toggled on and off with a checkbox.
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Contracting and Signaling, Winter 2008
Course prepares you to advise clients or your own organization on the design of contracts and screening policies when one of the parties has an information advantage over the other. For example, students study the design of patent licenses (the licensor knows more about the market), the design of social systems to reduce spam (the spam sender knows more about the content before the recipient decides whether to read), and the design of performance contracts for professional services (e.g., consul
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Decision-Making in the Field: Lawrence Summers
Lawrence Summers on Obama's Leadership During the Financial Crises. March 2011
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Thoughts on Race and Ethnicity Through the Mirror of American Literature
Presented by Professor David Tower. This is the fourth lecture in the 2011 GRCC Race and Ethnicity Conference.
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Pressure + Ink: Introduction to Printmaking
Produced in conjunction with the exhibition German Expressionism: The Graphic Impulse. Find out more at http://moma.org/germanexpressionism Special thanks to Phil Sanders, Director and Master Printer, Robert Blackburn Printmaking Workshop. A program of The Elizabeth Foundation for the Arts. Created by Plowshares Media PlowsharesMedia.com © 2011 The Museum of Modern Art, New York
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Authors@Google: Mark W. Moffett
Mark W. Moffett spoke to Googlers in Mountain View on March 11, 2011 about his book Adventures Among Ants: A Global Safari with a Cast of Trillions. About the book: Intrepid international explorer, biologist, and photographer Mark W. Moffett, "the Indiana Jones of entomology," takes us around the globe on a strange and colorful journey in search of the hidden world of ants. In tales from Nigeria, Indonesia, the Amazon, Australia, California, and elsewhere, Moffett recounts his entomological ex
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The water cycle: what goes around comes around
The resources here will provide you with content information as well as lessons and activities to guide your students to deeper understandings of the nature of water, the need for and intricacies of its management, and why water management issues can be divisive.
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Chestnut shell
Squirrels use their teeth to bite into and crack open chestnuts and other kinds of nuts. Their teeth leave marks on the nutshell after the squirrel has cracked it open to get the nut that is inside.
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Visual Datasets
The Visual Datasets text module discusses the concept of visual learning and presents some suggestions for ways to design learning environments that support students in developing visual literacy skills. Three visual datasets that can be used for problem solving activities in evolution, classification, development, and botany are included: Caminacules: A dataset of imaginary animals that can be used as the basis for a variety of problem-posing and problem-solving activities in evolution, classi
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