The Transistor Museum
The Transistor Museum is a fascinating site "dedicated to preserving the history of the greatest invention of the 20th century." The museum's front page mentions some remarkable facts and quotes that demonstrate the importance of the transistor in modern life. Visitors can read transcripts of lectures, oral histories, and short biographies of notable individuals who played a role in the development of transistor applications. An impressive photo gallery showcases some of the most prominent histo
Self-described as "the most reliable and up-to-date information resource for those working in the life sciences and associated industries," Bio.com brings together in one Web site daily news, information, and research tools geared mostly toward biotechnology. The Web site provides "live panel discussions and one-on-one interviews with leading scientists representing the diversity of research in biology and biotechnology, topical reviews and articles on cutting-edge topics in the life sciences, t
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 Microbial Ecology Group of Munich's University of Technology has recently launched probeBase, "a comprehensive database containing published rRNA-targeted oligonucleotide probe sequences, DNA microarray layouts and associated information." Users may search for sequences by target organism, which "can assist in the development of new rRNA-targeted oligonucleotide probes for fluorescence in situ hybridization (FISH)," or by probe name for rapidly retrieving published probes targeting desired s
Paul Bourke of the Astrophysics and Supercomputing department at Swinburne University of Technology is the author of this massive resource on fractals and chaos. He gives examples of many different kinds and classes of fractals, including the Mandelbrot set and various attractors; and brief explanations accompany each one. A substantial introduction to fractals covers the underlying principles and connection to chaos theory. Many stunning, high resolution fractal image galleries show elaborate p
Wired: New Browsers, Same Unwanted Ads
This article from Wired News reports on current trends in spyware and adware. The author discusses how people who stopped using Internet Explorer and started using alternate browsers, such as Mozilla Firefox, to avoid advertisements and improve internet security, may find that "spyware and adware writers are also making the switch." The author argues that as Mozilla gains more users, writers of spyware and adware programs will start writing for those browsers as well. On the positive side, the a
International Herald Tribune: Steel Shell to Encase Chernobyl
Following the accident at the Chernobyl nuclear power station, a concrete sarcophagus was built to enclose the remnants of the destroyed reactor. Now, nearly seventeen years later, engineers are faced with a new problem: the sarcophagus is literally falling apart. In a December 2002 news article, plans to build a giant steel shell around the sarcophagus are explained. Once completed, the shell "may be the largest movable structure ever built," around 370 feet high and 20,000 tons. The article de
What's New at Sci4Kids
The Agricultural Research Service (ARS) of the US Department of Agriculture offers its latest set of brief but engaging educational activities for kids in this Web site. The recently added feature, No Horsin' Around With These Tests!, introduces immunological concepts in the kid-friendly guise of a story about horses. Two older features are also available, one on using a biocontrol method to combat dry rot fungus in potatoes and another on mites. While these subjects may not at first appear to b
Created by the National Center for Biotechnology Information, UniGene is "an experimental system for automatically partitioning GenBank sequences into a non-redundant set of gene-oriented clusters." In addition to gene sequences, this Web site also offers thousands of novel expressed sequence tag (EST) sequences, a useful gene discovery resource. Organisms currently cataloged include human, rat, mouse, cow, zebrafish, clawed frog, fruitfly, mosquito, wheat, rice, barley, maize, and cress. Users
GLOBIO: Mapping human impacts on the biosphere
A joint project of the Norwegian Institute for Nature Research and the United Nation's Environmental Programme, Global Methodology for Mapping Human Impacts on the Environment (GLOBIO) aims to "present a simple visual overview of the cumulative impacts of increasing resource demands on man and the environment." Hundreds of environmental impact studies were synthesized with satellite imagery, infrastructure data, etc. to create this "visual overview" of past, current, and potential future conditi
BigChalk.com's goal "is to be the single education destination that's trusted by teachers, used by students, and relied on by parents." This education mega-site contains excellent resources ranging from lesson plans and homework help to in-depth articles. For example, the physical science subject page contains over twenty subjects that lead to well written explanations and visually pleasing illustrations, along with links to pages with further information. Containing far too much to mention, Big
Fairly Fundamental Facts about Forces and Structures
Students are introduced to the five fundamental loads: compression, tension, shear, bending and torsion.
The United States National Arboretum: Invasive Plants
The US National Arboretum offers this straightforward guide to invasive plants that gardeners and property owners in general should watch for. The Web site begins with an explanation of what the term "invasive" really means, followed by photos and descriptions of species to avoid planting altogether (such as purple loosestrife), and those that are less problematic if managed wisely (like English ivy). The site also describes the origin and current distribution of some of the most commonly encoun
This Topic In Depth focuses on the land, science, and scientists of Ireland.Offered by Enchanted Learning.com, the first site (1) gives kids a brief introduction to Ireland's geography through a description of its location, size, and major rivers; online and printable maps; and a quiz. The next site is called the Irish Scientist (2), which is an online version of a yearly publication that "provide a means for Irish scientists and technologists to describe -- to colleagues, legislators and the ge
Ozone depletion interactive lab
What is the process by which CFCs destroy ozone? This informational piece, part of an interactive laboratory series for grades 8-12, explores the destruction of the ozone layer by chlorofluorocarbons. Here students view a four-step animation that shows how ultraviolet light breaks chlorine free from a CFC molecule. The chlorine then destroys an ozone molecule. Additional steps show how the process can be continuous. Copyright 2005 Eisenhower National Clearinghouse
A complete guide to templates and tutorials for making tessellations is available here. Includes scholarly information on tessellations and their connections to math, geography and history. Some lessons feature ClarisWorks, Geometer, HyperCard, HyperStudio, LogoWriter, PCPaintbrush or PCPaint software programs. This site also includes a forum for teacher feedback and examples of student work.
Number line bounce (grades 6-8)
This online number line game for summing numbers challenges the student to find a sequence of operations with four numbers that results in a given target number. The numbers are illustrated as bouncing balls on a number line. Each bounce can be in either a positive or negative direction. The student can use a guess-and-check approach to solving the problem or a more sophisticated strategy. After finding a correct sequence and reaching the target number on the number line, the student forms the n
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
Assessment in Math and Science: What's the Point?
This 8-part video workshop covers all aspects of science assessment: embedded and authentic assessment techniques, integrated math/science assessment, and extensive information about assessment reform initiatives. This material is intended for K-12 teachers and is periodically offered as a free satellite broadcast through Annenberg/CPB channel. Supplemental materials, such as a workshop guide, are available for free downloading.
Soil as Living Skin
In this two-minute radio program, a soil scientist introduces listeners to reasons why soil is crucial to the planet. The scientist lists functions of soil that include nutrient cycling and water filtration, and he also uses living skin as an analogy for soil. The program, part of the Pulse of the Planet radio show, is available here in text and audio formats. Copyright 2005 Eisenhower National Clearinghouse