Fibonacci Numbers and the Pascal Triangle
http://milan.milanovic.org/math/index.php
Offered in English, German, and Serbian, this site is a good introduction to the mathematical concepts of Pascal's Triangle, Fibonacci numbers, and the Golden Section. Because it is operated in Yugoslavia, there are occasional grammatical errors in the English version. Nevertheless, the information presented gives a valuable account of the significance of these topics. The content of the site includes historical perspectives (with brief profiles of the mathematicians who originated the ideas) and descriptions of the arithmetic and formulas involved in each concept. The close relationship of Pascal's Triangle, Fibonacci numbers, and the Golden Section is also outlined. [CL]
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Cyberchase [Flash, Real Player]
http://pbskids.org/cyberchase/
Cyberchase, a daily, animated show on PBS, portrays three kids in their adventures in Cyberspace. To be successful in their missions, they must overcome mischievous scoundrels by using their mathematical know-how. The Cyberchase Web site has daily, weekly, and monthly features that follow the episodes. For instance, each day, there is a new game that demonstrates a concept covered in the show. Seven original adventures are also scheduled to appear on the site. For teachers and parents, there are lesson plans and tips for educating children about math. The site's interface has plenty of graphics that will entertain kids while they are learning. [CL]
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TeachingPlastics.org: Your Virtual Plastics Classroom [.pdf]
http://www.teachingplastics.org/
This site, operated by the American Plastics Council, has a huge amount of plastics resources for both teachers and students. The site is divided into two main sections. Hands On Plastics is geared primarily for middle and high school levels, and Hands On Plastics Jr. is better for elementary school. Educators will find many lesson plans and activities to help them introduce various topics, and they can order a free supplement kit with plastic products. Interactive multimedia walk-throughs of the activities show exactly what needs to be done and how to do it. There is also a large hyperlink list with information about many aspects of plastics. [CL]
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The Code Project
http://www.codetools.com/
The Code Project is an online repository of free tutorials, source code, and articles about a wide variety of programming languages. Sections devoted to C++, HTML, DirectX, and .NET are among the resources available on the site. Discussion forums and message boards are excellent places for developers to get quick answers to their questions from other members of the community (this requires a short registration). Featured articles and industry news keep the site up-to-date. There are some advertisements on the site, but they do not detract from the content. [CL]
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RobertNiles.com: Statistics Every Writer Should Know
http://nilesonline.com/stats/
Robert Niles, a journalist and producer for the LA Times, created this site to help other writers learn the basics of statistics. He explains many key concepts that are essential to report accurate, meaningful numbers and facts. After starting with the fundamentals of mean, median, and percent, Niles goes on to describe more advanced topics like normal distribution, margin of error, and data analysis. For each section, an example or two are provided to demonstrate proper usage of the techniques. A discussion of some frequently asked questions is also given, which covers survey sample sizes and choosing the right statistical test for different kinds of data. [CL]
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RAD University
http://www.rad.com/networks/netterms.htm
Operated by RAD Data Communications, this site has glossaries and a myriad of tutorials related to computer networks. Students "at Tel Aviv University and the Technion, Israel Institute of Technology" created the tutorials, which are grouped into several categories. These include introductory information, security and application protocols, infrastructure, and network layers. The tutorials are quite well made; most are very comprehensive with diagrams and illustrations. There are even some games and quizzes to reinforce what is presented in the tutorials. The three glossaries give simple, straightforward definitions and descriptions of various terms and technologies. [CL]
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ElectroSim 2.0: Interactive Simulations of Basic Electronic and Operational Amplifier Circuits
http://www.inform.umd.edu/EdRes/Topic/Chemistry/ChemConference/Software/ElectroSim/
ElectroSim 2.0 is a collection of modules, created by Professor Thomas O'Haver of the University of Maryland at College Park, that simulate various kinds of electronic circuits. Available for free download, the software can be used on Macintosh or Windows computers (although a special utility is required to run it under Windows). Over twenty common analog circuits are included in the package. For each simulation, properties such as voltage, resistance, current, capacitance, and many more can be changed to see how particular circuits behave under different operating conditions. There are easy to follow instructions and simple controls, making this a very useful tool for understanding some fundamentals of electronics. [CL]
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NonEuclid: Interactive Constructions in Hyperbolic Geometry [.zip]
http://cs.unm.edu/~joel/NonEuclid/
Joel Castellanos, a graduate student at the University of New Mexico, in cooperation with a professor and another graduate student, is the author of the Java applet NonEuclid. Intended for high school and undergraduate students, the "software is a simulation of a non-Euclidean Geometry called Hyperbolic Geometry." This is most commonly associated with Einstein's General Theory of Relativity and topology. The NonEuclid home page has good documentation, examples, and activities for using the applet, but perhaps the most useful parts of the site are the basic concepts. These give a good introduction to Hyperbolic Geometry and help the user understand what is represented in the NonEuclid simulation. [CL]
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