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Maths Challenge.net
Maths Challenge is a fun activity to build mathematical and reasoning skills. Each month during the school year, a new set of math problems are posted online. There are miscellaneous problems at junior and senior levels, cryptography and code breaking problems, and computer programming challenges. Each section is appropriate for a different age range, but the most basic material starts at age eleven and increases from there. To participate in the programming exercises, a simple registration is r
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Unidata K-12 Weather Sites
Unidata is a community, consisting mostly of educators and researchers, which provides "data, tools, and community leadership for enhanced Earth-system education and research." In this section of the website, Unidata members suggest some of their favorite K-12 websites that educators can use to teach about weather. Along with each website link is a short description of the resource. Some websites are described as offering multimedia instructional resources and weather data, while others offer in
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An FPGA Implementation of the Linear Cryptanalysis
This advanced research paper addresses an application of field-programmable gate arrays (FPGAs) for a computationally intensive cryptographic task. Specifically, the method of linear cryptanalysis is used to break a Data Encryption Standard key (a former standard used by the US). Prior to this work, the technique was attempted on a network of nearly 20 computers, and the key was broken in about four days. Implementing the same technique with a $3500 FPGA hardware setup, the authors report a tota
Author(s): Legat, Jean-Didier.,David, Jean-Pierre.,Quisquater

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Bionic Eyes
Both Web sites come from Science@NASA, an online source for news and information about NASA-funded research. The first article describes the work of researchers at the Center for Commercial Applications of Combustion in Space, who are developing artificial bones for long-lasting, pain-free hip and knee replacements. These ceramic bones are touted as "so much like the real thing that they could actually meld with living bone." Earlier this year, researchers at the Space Vacuum Epitaxy Center in H
Author(s): Phillips, Tony.,Price, Steve.

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Garden Questions: Horticulture and Crop Science in Virtual Perspective
Garden Questions is a joint project of the Ohio State University Department of Horticulture and Crop Science and the OSU Extension's Franklin County Office. The Web site offers an archive of gardening questions and answers that's easy to use and quite comprehensive. Users may search the archive by topic, season, and keyword, or send new gardening questions by email. Many of the questions posted include helpful photographs, especially for questions about specific plants. Gardeners should find thi
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The Global Sun Temperature Project
This website created by Stevens Institute of Technology and the Center for Innovation in Engineering and Science Education (CIESE) allows students from around the world to work together to determine how average daily temperatures and hours of sunlight change with distance from the equator. Upper elementary, middle, and high school students can participate in the Global Sun Temperature Project from March 18 to June 3, 2005. Educators can find project information, lesson plans, and implementation
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National Park Service Cartographic Resources Visitor Use Maps
The National Park Service Cartographic Resources Visitor Use Maps Web site contains a wealth of free maps to view and download. The dozens of National Parks represented on the site include all of the most popular ones (Yellowstone, Smokey Mountain, Rocky Mountain) as well as many of the little known parks such as Wupatki National Monument, Organ Pipe Cactus National Monument, and Glen Echo Park. The highlight of the site is the number of choices users have to view or download the maps. For examp
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The Physics Van Outreach Program
The Physics Van Outreach Program is a part of the University of Illinois Physics Department, whose Web site contains some good learning tools for kids. The question database is an accumulation of over 1000 physics related questions from kids and their corresponding answers. Visitors can browse the questions by date of entry or by subject, and can even search by keyword. The major subjects covered include air; electricity and magnets; light and sound; forces; solids, liquids, and gases; and space
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GEOSCAN Database
Provided by Natural Resources Canada and part of the Earth Sciences Information Centre, GEOSCAN Database boasts a bibliographic database that contains "over 40,000 records covering all the publications of the Geological Survey of Canada." Users can search by basic keyword, title, author, subject, location, year, etc. Results can be displayed by various formats and can be selected for later review, and many include links to the publication's full text, which can be accessed free of charge. The ea
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International Association of Sedimentologists
"The International Association of Sedimentologists (IAS) was founded in 1952 with the goal to promote the study of sedimentology and the interchange of research, particularly where international cooperation is desirable." The website provides visitors with the association's monthly newsletter, which discusses conferences, recent studies, workshops, and more. Students and educators can learn about and view the beautiful sedimentological exposures in Arizona and Utah. PhD students can find informa
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Science Portal
The Australian governmental Web site, Science Portal delivers science information and services to industry, investors, and the research community. The site allows visitors to find relevant links in their field from all of Australia's research and research-related organization Web sites. The portal can be searched or browsed by various research topics including directories and databases, policy, research grants, and more.
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Floods: The Awesome Power
A newly released publication from the National Oceanic and Atmospheric Administration, the National Weather Service, and the Red Cross is entitled "Floods: The Awesome Power." The citizen-focused sixteen-page preparedness guide explains "flood-related hazards and suggests life-saving actions you can take." Readers will learn what flash floods are, what to do if youÂ’re caught in your vehicle during a flash flood, what river floods are, how tropical cyclones create floods, where to get current we
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NSTA Webwatchers' Science Guides
The Webwatchers' Science Guides website -- provided by the National Science Teachers Association -- is a portal to educational resources on the Internet. Along with carefully selected links, this website offers a few downloadable lesson plans, as well as audio reviews from fellow teachers and vignettes demonstrating how to use the Guides in the classroom. Navigation can be somewhat tricky -- the site follows an elaborate organizational scheme that requires its own 4-page explanation. For a quick
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The High Energy Weapons Archive: A Guide to Nuclear Weapons
Nuclear weapons are arguably the most destructive force invented by humans. The High Energy Weapons Archive has material on the history of their development, post World War II testing, and country-specific nuclear programs. There are facts about countries that could soon have nuclear weapon technology, including Iraq and Israel. Several links to government and news related sites are also given. Simply a source of information, the archive in no way condones nuclear weapons; this is stated repeate
Author(s): Sublette, Carey.

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The NASA Sci Files
The NASA Sci Files website "is designed to enhance and enrich the teaching of mathematics, science, geography, and technology in grades three through five." Educators can find the television broadcast schedule, past episodes for free, and innumerable in-class and at-home activities. Students can solve NASA problems, find animations and videos, discover experiments they can do at home, and much more. Parents can find out why and how they can become involved in exciting their children about scienc
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Ready to Learn: All About Hepatitis C
This comprehensive online resource for information about Hepatitis C is provided as a public service by Schering Corporation, the medical research and development company. Anyone who has specific questions about Hepatitis C, or who wishes to learn more about the disease in general, should find this Web site of great use. The site offers a wealth of detailed information about this disease that affects over 170 million people worldwide. Causes, symptoms, transmission, prevention, and treatment are
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Predictions 2005
Gartner, Inc., which provides research and analysis on the global IT industry for clients worldwide, offers annual predictions for the year ahead in the areas of technology, application, and industry. This section of the website highlights the firm's 2005 predictions for technology. Some of the technologies addressed in this issue include open source software, public network infrastructure, and mobile and wireless technologies. The full document must be purchased, but visitors may browse through
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Duke University Robotics
This website highlights robotics research from the Robotics and ManufacturingAutomation Laboratory at Duke University. Their work is "devoted to thedevelopment of command and control systems for cooperative robots." Theirwebsite provides descriptions and some demonstration videos of their work inmultiple industrial robot control, mobile robot development, sensor fusion,robot-World Wide Web interfacing, sensor integration, among other relatedprojects. A bibliography of publications by Lab researc
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Observational Cosmology in the Timbie Group
The Timbie Group at the University of Wisconsin-Madison specializes "in the development and deployment of instruments capable of reaching the exquisite levels of sensitivity necessary to detect the very weak microwave signals constituting the Cosmic Microwave Background" (CMB). The website offers materials about the group's current and recent endeavors, including the Polarization Observations of Large Angular Regions (POLAR) and the development of Monolithic Silicon Bolometers and Miniature Adia
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Cell Biology and Cancer
The National Cancer Institute, part of the National Institutes of Health, has recently released this curriculum supplement as part of a series designed to "deepen students' awareness of the importance of basic research to advances in medicine and health," as well as foster critical thinking and an understanding of how scientific discoveries affect their own lives. The Web site offers five outstanding student activities (grades 9-12) regarding cancer and cell biology. Some of these activities hav
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