ArXiv is an e-print service owned, operated and funded by Cornell University, and partially funded by the National Science Foundation. The database includes articles online in the fields of physics, mathematics, nonlinear science, computer science, and quantitative biology. From the Mathematics section, visitors can search for related articles on topics by using an online search form with various search options. For example, articles can be retrieved by searching on recently posted abstracts wit
Center for Earth and Planetary Studies Research and Publications
The Center for Earth and Planetary Studies (CEPS), which is part of the Smithsonian's National Air and Space Museum, "conducts an active research program in planetary and terrestrial geology and geophysics using remote sensing data from Earth-orbiting satellites and manned and unmanned space missions." The Research portion of the site allows visitors to view the many projects that have taken place, such as the Topographic Mapping of Mercury project being conducted by Dr. Anthony Cook. Each page
Wits University: Climatology Research Group
The Wits University Climate Research Group focuses its efforts on four main areas of research: atmospheric aerosols and their radiative forcing potential over southern Africa; microphysical processes in clouds; biogenic-atmospheric interactions; and air quality and management. After reading the synopsis of the many research projects, visitors can view a gallery of photographs of the group's events and endeavors. Although the research link is still under construction, individuals can find a list
The Micropolitan Museum
Hosted by Microscopy UK, the Micropolitan Museum exhibits wonderful images of microorganisms developed by photomicrographer Wim van Egmond. Museum visitors can peruse images in the Freshwater Collection, Marine Collection, and Insectarium. Exhibitions within the first two collections include such crowd-pleasers as the Foram Factory, Diatom Display, Water-flea Circus, Desmid Dome, and more. A highlight of the Insectarium is the small, yet dazzling, Insect Wings exhibit. The beautiful and clear im
From Flying Publisher, _HIV Medicine 2005_ is a free, online "medical textbook that provides a comprehensive and up-to-date overview of the treatment of HIV Infection." This edition is an update of the 2003 version of the textbook (reported on in the June 13, 2003 NSDL Scout Report for Life Sciences). Chapter titles in the textbook include HIV Testing, HIV and Pulmonary Diseases, Mitochondrial Toxicity, HIV and HBV Coinfections, and Traveling with HIV, to name a few. The textbook is available in
Using technology to support Limited-English-Proficient (LEP) students' learning experiences
This article examines the challenges and rewards related to using technology as a tool to increase learning for limited English-proficient (LEP) students. The article is based on the belief that students' content, linguistic, and technology skills should be developed in tandem. Strategies and standards for technology use are featured along with suggestions for enhancing LEP students comfort level in content classes. Access and equity and the redefinition of teacher roles are also discussed. Impr
Ozone in the atmosphere : ozone depletion
What processes cause a depletion of the ozone layer? This informational page, part of an interactive laboratory series for grades 8-12, explores natural and human-made destruction of the ozone layer. Here students read about the instability of ozone atoms and the naturally changing quantities of ozone in the air. Volcanoes, the oceans, and other natural processes provide chemicals that break down ozone. Chemical equations of the breakdowns are provided. A discussion of the use of chlorofluorocar
systems of linear equations
Solve a system of linear equations by graphing and finding the intersection of the lines of the equations. Create a system of equations, examine its graph, matrix, and table of values, and determine the solution of the system.
Peer Review Tutorial
In this five-page tutorial, students read about peer review, a fundamental practice of scientists. The tutorial explains what peer review is, the benefits it can provide to professional scientists and students, and the ways that students can effectively engage in peer review. Students read about the different points in a research project at which the scientific community uses peer review, from the review of proposals seeking funding to the formal publishing of experimental results. Ideas for bri
Quick take on exploring careers in mathematics
Even though the potential connection between today s math classroom and the jobs of the future is frequently cited in speeches, reports, and news headlines, busy middle school students may not be paying attention. Here are five online resources that can help you make the connection more relevant, and a lot more engaging, to preteens. In some cases, the connection appears in the words of young people who recognize that math and science were the keys to jobs they love.
Function machine (grades 6-8)
Applying a machine metaphor for functions, this virtual manipulative allows the learner to examine the relationship between input (domain) and output (range). The learner inputs numbers from one to four and the virtual machine generates output information in a table. The learner is challenged to find the output for values five through seven and enter them in the table. Errors are noted automatically. Using a new function button, different types of functions are randomly offered for investigation
Observe an animation of a comet's passage through the solar system
With these animations, Earth science students can follow the 76-year orbit of Halley's Comet. The introduction describes the highly elliptical orbit of comets and states that comet Halley will return to the solar system in the year 2061. Students are instructed to choose between a wide-angle view of the comet's entire orbit and a view of the comet's path through the inner solar system. The wide-angle view shows how the comet's velocity increases as it approaches the sun and decreases as it trave
The last ice age ended about 10,000 years ago, and was followed by a mass extinction of large mammals. This radio broadcast reports on research into how human activity and climate change may have created a one-two punch that wiped out the big animals. The clip from 2005 is 2 minutes in length.
What is mathematical infinity? Are some infinities bigger than others? And does infinity exist in nature? This radio broadcast discusses how the infinitesimal is needed to understand motion and change; the idea that infinity is a limiting process rather than a thing; whether physical infinities exist such as at the Big Bang or in black holes; the discovery of zero and imaginary numbers; and the sense in which numbers can be said to be real. There is discussion on the paradoxes of Zeno; Cantor an
Frequently Asked Questions: Questions About Paleontology
This site asks and answers questions about paleontology, fossils and dinosaurs. Paleontology questions are: What is paleontology? How does paleontology differ from anthropology and archaeology? What are the practical uses of paleontology? How do paleontologists know how old their fossils are? What training is necessary to become a paleontologist? What organizations exist for paleontologists?
How high? : measurement (grades 6-8)
With this virtual manipulative, the student investigates conservation of volume with a virtual simulation of pouring a liquid from one container to a container of the same shape, but of a different size. There are four cylinder shapes to choose from: rectangular prism, cylinder, cone, and pyramid. The left container is partially filled with liquid and the base dimensions of the two cylinders are given. The student uses a slider to estimate how high the liquid will rise when poured into the secon
Keeping Cool at Deep-Sea Vents
This Astrobiology Magazine article reports that a research team of marine scientists has determined that water chemistry controls the location and distribution of two species of weird worms inhabiting deep-sea hydrothermal vent sites: the tubeworm (Riftia pachyptila) and Pompeii worm (Alvinella pompejana). The article includes color images of the worms and monitoring equipment, links to related web pages and other astrobiology resources, and an MP3 machine text-to-speech function.
Evolution ExplorationsAnimals/Human body lesson plan (grades 6-8)--DiscoverySchool.com
In this two day lesson, students will learn that humans have behavioral traits and characteristics in common with other animals. The website includes the lesson plan, discussion prompts, evaluation guidelines, extensions, a glossary, and MCREL standards.
The SDA Kids Corner
The Soap and Detergent Association Kids Corner features some academic information regarding the history and chemistry of soaps and detergents, recycling plastic cleaning product bottles, environmentally smart ways of using and disposing of cleaning products, facts about environmental issues, and cleaning tips to help reduce the risk of foodborne illness. But what students will find most enjoyable is the section on bubbles. Bubble Recipes, Bubble Magic, The Pop-proof Bubble!, Bubblemania: Bubble
Live From CERN
Live from Cern is a series of live and archived video broadcasts on topics in physics and related fields with supporting educational material. Broadcasts so far include content on antimatter, extraterrestrial life, and the impact of science on modern life.