This portal offers current information that will change as the season progresses, but some of the background material is valuable for educational purposes. Graphics include The evolution of a hurricane, What makes a storm a hurricane, Hurricanes can quickly become monsters, Slow-moving hurricanes often die, How hurricanes create storm surge, Wind rolls create strongest gusts on land, and How wind ... Full description.

This is the Science and Nature portal for the British Broadcasting Corporation (BBC). Topics include Animals, Prehistoric Life, Human Body and Mind, Genes, Space, and Hot Topics in science and nature. Other links lead to featured stories, message boards, quizzes, picture galleries, games, wallpaper, screensavers, and web postcards. In addition, there is a list of science programs on radio and television ... Full description.

This resource discusses Differential Global Positioning Systems (DGPS), and why they were developed. It provides a brief history of GPS and the selective availability mode which was formerly used to degrade accuracy for non-military purposes. Full description.

WeatherTap.com is a subscription service for online weather data. For 74 dollars a year, users can access numerous including real-time radar, high-resolution satellite imagery, lightning data, complete aviation and severe weather coverage and more. WeatherTap can be used to plot custom locations with lat/long coordinates, monitor individual storm tracks and attributes, measure distance, plot range ... Full description.

This is an extensive resource for students of high-level mathematics. Wolfram Research and Eric Weisstein have put together this site with the very advanced student in mind, and the focal point is the enormous resource library. Covering a wide range of math topics, such as number theory, discrete mathematics, and topology, the 10,000+ pages feature notes, diagrams, example problems, definitions of ... Full description.

This animation explains the code-phase and carrier-phase portions of the signal that is used for timing in Global Positioning Systems, and their uses. It is accompanied by a written explanation. Full description.

The Geography Network is a global community of governmental and commercial data providers who are committed to making geographic content easily accessible. The site provides an extensive collection of maps, searchable by theme (shaded relief, streets, population, rivers, etc.) or geographic area (continents, countries, or U.S. states). It also offers access to a large collection of geographic data, ... Full description.

This website is designed to help students and educators integrate technology into the classroom. It includes a collection of book reviews and articles, as well as the 42eXplore section, which provides weekly links to project or lesson plan websites on various educational topics. Sites are sorted by topic and include links to sites about astronomy, biology, caves, clouds, dinosaurs, earthquakes, glaciers, ... Full description.

This special collection of news stories, best practices, and other resources is designed to help integrate GIS and other geospatial technologies into the classroom and district offices. Links for the exchange of ideas and experiences, curriculum, software, and data between GIS educators around the globe are provided by the editors of eSchool News and ESRI. Resources to share lessons for using GIS ... Full description.