Extrasolar Visions
The Extrasolar Visions Web site provides a searchable guide to extra solar planets. These include planets of normal stars, pulsar planets, brown dwarfs, protoplanetary disks and protoplanets, extragalactic worlds, massive compact halo objects, and disproven or doubtful worlds. Visitors can search for these objects or view the week's 20 most popular systems, 20 most interesting systems, or the 20 most recently updated systems. Once chosen, the objects name, mass, average distance, and type is giv
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Nutrition Café
Developed jointly by the Pacific Science Center and the Washington State Dairy Council, Nutrition Café offers students three interactive games to explore the world of nutrition. The first game, Nutrient Sleuth, is an entertaining hangman-style game where students try to discover what nutrients different characters are missing based on clues and letter guesses. Another enjoyable offering is Grab A Grape, a Jeopardy-style game where site visitors try to match nutrition-related questions with answ
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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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Coral Reef Information System: Discover NOAA's Data
Part of the National Oceanic and Atmospheric Administration's Coral Reef Information System (CoRIS), this Web site is "designed to be a single point of access to NOAA coral reef information and data products, especially those derived from NOAA's Coral Reef Initiative Program." With Discover NOAA's Data, users can access information by a text search of metadata records, or by a spatial search using an Arc IMS application. The two approaches share many of the same data sets. With the text search,
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Biological Biochemical Image Database
The National Institute on Aging -- one of the National Institutes of Health -- provides the Biological Biochemical Image Database, "a searchable database of images of putative biological pathways, macromolecular structures, gene families, and cellular relationships." The database is intended for researchers "working with large sets of genes or proteins using cDNA arrays, functional genomics, or proteomics." The database may be searched by gene name, pathway, cell or tissue type, disease name, bi
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A Thin Blue Line: The History of the Pregnancy Test
In today's world, the test for pregnancy is only a pharmacy, and minutes, away. This wasn't always the case, however. Until 1978 no definitive means existed for at-home pregnancy testing. This site, from the National Institutes of Health, traces the history of the test back to its earliest roots at NIH. The site includes historical information on the early Egyptian practice of women urinating on wheat and barley to the more modern research into human chorionic gonadotropin (hCG), the so-called p
Author(s): Leavitt, Sarah A.

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Museum of the Future
This Web site, operated by the Ars Electronica Center in Austria, provides an online tour of a fascinating museum. It can be a little confusing to navigate at first, but it is certainly worth visiting. The main attraction is the Guide through the Museum of the Future. After clicking this link, it is important to note the language selector that chooses between German and English. Six different sections of the museum can be explored by the icons on the right, and each section has several different
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Captain Astounding
This is a companion website to the Captain Astounding books, which are "richly illustrated" books intended to make mathematics enjoyable for undergraduate students and adult learners. The books are described as humorous stories addressing topics in math, which the website argues makes them not text books. The website provides information about the books, contests and useful links, as well as a section highlighting some math topics from the featured book. For February, 2005, the featured book is
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MIT Space Systems Laboratory
Massachusetts Institute of Technology (MIT) created the Space Systems Laboratory (SSL) in 1995 to engage in "cutting edge research projects with the goal of directly contributing to the present and future exploration and development of space." Users can find materials on current and past flight projects such as the Synchronized Position Hold, Engage, Reorient Experimental Satellites (SPHERES) and the Interferometry Program Experiment (IPEX). The website also features SSL's ground programs and re
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Switcheroo Zoo
As the name implies, the colorfully animated Switcheroo Zoo -- produced by Tubehead, an interactive multimedia studio -- allows you to swap the heads, legs, or tails of various zoo animals to create fantastical new creatures. Not just a place to watch cool morphing animation, this Web site has educational applications as well. Click on Educators' Resources, and scroll to the bottom of the page for a simple lesson plan geared toward younger students. The lesson plan is designed to "expand student
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Great Lakes BeachCast
The Great Lakes Information Network developed this website to "broadcast critical information about beach closings and educational content on human health concerns." The website provides the latest news on erosion control projects, contamination and cleanup efforts, beach testing efforts, and other environmental news. Users can explore monitoring data and maps by location. The website also contains the proceedings from the Great Lakes Beach Conferences from 2001 and 2002 and the US EPA's Beach P
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Computer Aided Instruction Project
Central Connecticut State University maintains several tutorials and lecture notes about different programming languages and mathematics. Some of the material, most notably the Introduction to Assembly Language, is primarily intended for computer science students. However, much of the site can be useful for anyone; programming guides for Java and QuickBasic are provided, as well as tutorials on vector mathematics and finite-state automata. All of these topics are presented separately and are qui
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NOAA Satellite and Information Service
"The Satellite Services Division of the National Environmental Satellite, Data, and Information Service (NESDIS) provides real time access to satellite data and products for the public and government." Users can locate Hazard Mapping System (HMS) Fire Analysis, real-time satellite fire monitoring, Web-based GIS fire analysis, and additional fire products. The OSEI (Operational Significant Event Imagery) link supplies archived and current images of flood events, severe weather, tropical cyclones,
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Soil Landscapes of Canada
The Canadian Land Resource Networks (CLRN) online mapping application, Soil Landscapes of Canada, utilizes GIS technology to view the major characteristics of soil and land for the country and is "organized according to a uniform national set of soil and landscape criteria based on permanent natural attributes." Users can view coverage from eighteen areas and ten different attributes -- including soil development, surface material, slope, and vegetation cover; with or without cities and roads; a
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Karbosguide.com
A prodigious author of computer science books presents several introductions to computers and computer-related technologies at this site. Eight different guides are available, which cover topics including digital data, motherboard logic, and the computer input/ output interface. The text and accompanying illustrations are not overly technical in nature, and are therefore suitable for almost any audience. A section on digital imaging is under construction as of March 2003; it has information on p
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Geoboard : coordinate (grades 6-8)
This virtual manipulative features an interactive grid where the student can mouse over points on the grid to display their coordinates and form shapes using virtual rubber bands. The online geoboard has a measure function that displays area and perimeter for shapes and, for single bands connected to two virtual pegs, distance and slope. Shapes may be colored as a way to sort or enhance them. The site features activities to explore slopes, construct reflections, and find an inscribed parallelogr
Author(s): Utah State University. National Library of Virtual

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Copyright 2003 MATTI Associates LLC. All rights reserved.

Floor tiles
This Java applet enables students to develop tessellations, which are patterns on a plane that do not overlap. The student is given a square that can be distorted into quadrilateral shapes by dragging its corners. Users can select colors for the alternating quadrilateral pattern, and a button displays information about the quadrilateral in a second window. The window lists the coordinates of the vertices, angle measurements, side lengths, area, and perimeter of the quadrilateral. From the applet
Author(s): Shodor Education Foundation

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Copyright 1997-2004 The Shodor Education Foundation, Inc.

Examine the phases of the moon from Earth and space
This animation is designed to help Earth science students correlate the moon's phases with its orbit around the Earth. The introduction explains that, while the sun always illuminates one half of the moon, the moon's appearance depends on how much of the sunlit moon is facing the Earth. The split-screen animation includes two views of the moon: one from Earth and the other of the moon's orbit around the Earth. Students may toggle between an oblique view of the earth-moon system and a view from a
Author(s): TERC. Center for Earth and Space Science Education

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See site for guidelines governing the use, restrictions and reproduction of these materials.

Elapsed Time
Calculate the difference between the times given by two analog clocks. Rotate the hands of the clocks to change the time and see how the calculation changes.
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Water Properties
This simple description of the chemical and physical properties of water was produced by the U.S. Geological Survey. It includes a brief quiz to assess prior knowledge, diagrams of water molecules, and important numerical data about water.
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