Chemical Warfare Agent Issues During the Persian Gulf War
The Central Intelligence Agency (CIA) Web site offers an unclassified document for public review entitled Chemical Warfare Agent Issues During the Persian Gulf War. The introductory paragraph states, "This paper reflects the results of our multifaceted investigation into the Chemical Warfare (CW) issue, examining information on CW agent releases, Gulf war Iraqi CW deployments, and Iraqi chemical agents and weapons." One of the final paragraphs claims that the US still believes that Iraq did not
Applied Soft Computing: Elsevier Science
Debuting in March 2001, Applied Soft Computing is the official, online journal of the World Federation on Soft Computing. The journal focuses on "Fuzzy Logic, Neural Networks, Evolutionary Computing, Rough Sets and other similar techniques to address real world complexities." Applications of soft computing are very diverse, ranging from pattern recognition to telecommunications. The most recent issue has five articles, in which genetic programming is a prevalent topic. Access to full online text
Space Technology Hall of Fame
The Space Technology Hall of Fame is a fascinating Web site that honors "the innovators who have transformed technology originally developed for space into commercial products." Selection criteria for the induction process are given in the Hall of Famers section. It is interesting to note the weights of each criterion, with the most points given for public awareness and social benefit. The Hall of Fame was started in 1988, and descriptions of all the technologies inducted since then can be brows
Australian Biological Resources Study: Flora Online
The Australian Biological Resources Study (ABRS) provides a bounty of biological and taxonomic information regarding Australian plant and fungi species. Acting as a clearinghouse for online information about plants and fungi, ABRS connects to such resources as the Flora of Australia Online, Checklist of Australian Lichens, Interactive Catalogue of Australian Fungi, Census of Freshwater Algae in Australia, and the Australian Plant Name Index. The site also provides a collection of glossaries that
Learning about Rainforests
K. Rubal provides this educational Web site she helped to create while a graduate student in instructional technology at California State University in Los Angeles. Designed for grades 4-8, this Web site offers students an introduction to tropical rainforests. The site includes a number of lessons organized by topic, rainforest facts, a good selection of narrated movie clips from related documentaries, useful links, and quizzes. Easy to use and filled with photos, this Web site would be a useful
The State of the Nation's Ecosystems
This Web site is provided by the H. John Heinz III Center for Science, Economics and the Environment -- "a nonprofit institution dedicated to improving the scientific and economic foundation for environmental policy." The State of the Nation's Ecosystems is a comprehensive report prepared by "experts from businesses, environmental organizations, universities, and federal, state, and local government agencies," intended for "decision makers, opinion leaders, and informed citizens who seek an auth
Dream Anatomy Learning Station
This Web site contains the educational materials for Dream Anatomy, a new exhibit at the National Library of Medicine. Viewable online, the exhibit offers a somewhat macabre but undeniably fascinating survey of changes in anatomical representation over the last five centuries. Recently added to the main Dream Anatomy Web site, Learning Station provides lesson plans and activities intended for 6-12 graders. The material can be used exhibit or its online version. The lesson plans titled Beginnings
The science of light : funhouse mirrors background
This page briefly describes and illustrates the laws of reflection. It includes a short section on pedagogy and it relates the content to standards.
Solving a problem
This informational piece, part of a series about the future of energy, introduces students to a three-stage process for problem solving. The three stages are identify the problem, test the solutions, and evaluate the results. A student tip sheet explains each stage and enables students to work through the processes in a step-by-step manner while seeing how the information is tied together. A graphic organizer provides students with an opportunity to evaluate the problem-solving solutions they ha
Bees are Master Pollinators and Cannot be Mimicked Cost Effectively
The study of biomimicry and sustainable design promises great benefits in design application. It affords means by which to promote cost-effective, resourceful, non-polluting avenues for new enterprise. These “blueprints” have existed previously as underappreciated strategies by relatively unfamiliar organisms. An important final caveat, however, must still be addressed. One cannot leave the student with the misunderstanding that once copied, species are expendable. Biomimicry is intended to
Locks and Dams
Students are introduced to the structure, function and purpose of locks and dams, which involves an introduction to Pascal’s law, water pressure and gravity.
Through eight lessons, students are introduced to many facets of dams, including their basic components, the common types (all designed to resist strong forces), their primary benefits (electricity generation, water supply, flood control, irrigation, recreation), and their importance (historically, currently and globally). Through an introduction to kinetic and potential energy, students come to understand how dams generate electricity. They learn about the structure, function and purpose of loc
Heredity Mix ’n Match
Students randomly select jelly beans (or other candy) that represent genes for several human traits such as tongue-rolling ability and eye color. Then, working in pairs (preferably of mixed gender), students randomly choose new pairs of jelly beans from those corresponding to their own genotypes. The new pairs are placed on toothpicks to represent the chromosomes of the couple’s offspring. Finally, students compare genotypes and phenotypes of parents and offspring for all the “couples” in
Electronics - Tutorial
An encyclopedic collection of descriptions of electronics circuitry and principles to introduce or reacquaint readers with a wide variety of concepts. The site is very well organized to access the information needed. In addition to passive and active components, electricity and magnetism are also described.
Principal Component Analysis
This site provides an introduction to principal component analysis, beginning with a glossary of important terms before taking the reader through the process of completing a principal component analysis. One limitation to the site is its reliance on Minitab and SPSS for calculations. Users without access to these programs can reproduce the calculations using other software packages, such as the freeware program R. Prior knowledge of basic statistics is assumed; thus, the site is most appropriate
Fundamental measurement PowerPoint
This site contains good images of basic general chemistry lab equipment and how to use them to make measurements (graduated cylinders, burets, thermometers, and balances). It could be useful for introducing students to laboratory work and measurements.
Bragg's Law and Diffraction
This site presents an introduction to Bragg\'s Law of Diffraction, along with how diffraction of x-rays provides information on atoms in crystalline material. An Applet allows the user to vary the wavelength and angle of incidence of radiation to a surface, along with the distance between layers of the material to demonstrate the conditions necessary for constructive interference, or a Bragg\'s condition. The derivation of Braggs law is also explained.
A Case of the Wobbles: Finding Extra Solar Planets
Students plot and analyze NASA data to determine the period of an invisible planet orbiting a wobbling star.
Lesson plan with word search activity which aims to teach children about the metamorphosis and development of an amphibian from tadpole to frog.
You Again? Reintroducing and Introducing Species
This BioBulletin Web site takes an in-depth look at the work involved in reintroducing and introducing species. The site includes text, videos, photographs, and interviews with key scientists. What Is Being Moved and Why? outlines the three motives for relocating members of a species for release into the wild.