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DanielSoper.com - The homepage of Daniel Soper

Free Online Math Calculators and Converters. Mathematics Calculation is made easier.

Purplemath contains practical algebra lessons demonstrating useful techniques and pointing out common errors. Lessons are written with the struggling student in mind, and stress the practicalites over the technicalities. Links and other resources als...

User-friendly introduction to statistics, probability, and survey sampling. Free, online tutorials - a general statistics tutorial and a tutorial tailored to the Advanced Placement (AP) Statistics curriculum. Online tools - statistical tables, probab...

A comprehensive calculation website, which aims to provide higher calculation accuracy, ease of use, and fun, contains a wide variety of content such as lunar or nine stars calendar calculation, oblique or area calculation for do-it-yourself, and hig...

Statistical resources for social scientists, including Z-test, Chi-square & T-test statistical calculators.

Online shopping from the earth's biggest selection of books, magazines, music, DVDs, videos, electronics, computers, software, apparel & accessories, shoes, jewelry, tools & hardware, housewares, furniture, sporting goods, beauty & person...

Online Conversion is a resource for weights, measures, calculators, converters.

National Weather Service Home page. The starting point for official government weather forecasts, warnings, meteorological products for forecasting the weather, and information about meteorology.

RunBayou Marathon Training philosophy is designed to minimize the risk of injury, applies theories developed from endurance research, and draws on the successful programs of many leading distance running coaches including Jack Daniels, Ph.D. and Arth...

DuPont is a science-based products and services company. Founded in 1802, DuPont puts science to work by creating sustainable solutions essential to a better, safer, healthier life for people everywhere. Operating in more than 70 countries, DuPont of...

Online ballistic calculators to help shooters calculate bullet trajectory, bullet kinetic energy, maximum point blank range, and recoil. Explains how to make these calculations and produces charts and graphs that compare various firearm cartridges a...