A VIRTUAL LIBRARY OF USEFUL URL'S - 500'S - NATURAL SCIENCES AND MATHEMATICS

Biographies of Mathmeticians - From the University of St. Andrews in Scotland, these comprehensive biographies are indexed alphabetically, chronologically, and by gender.

Calculator - Contains 15 of the most popular calculators online

Cool Math - Coolmath was designed for the math geeks of the world who love math and want more, more, more!

Countdown - Using the technology of Quicktime to develop math skills. COUNTDOWN is a challenging interactive television math program which has engaged tens of thousands of students through broadcasts on cable television in Chicago. Capitalizing on the one on one relationship a student viewer has with television, COUNTDOWN makes math “work”. Each week the program introduces a different math concept through direct instruction and reinforces lessons with literature, manipulatives, activities and related computer instruction. Student viewers are encouraged to call a televised phone number to participate in the show by responding to challenges presented by the on-air educators.

Create A Graph - Online tool to create 5 types of graphs; tutorial included.

KHAN ACADEMY - Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computing, history, art history, economics, and more, including K-14 and test preparation (SAT, Praxis, LSAT) content. We focus on skill mastery to help learners establish strong foundations, so there's no limit to what they can learn next!

Maths Dictionary - A reference resource with over 600 math terms

Math Mistakes - Real Mistakes from Real Student Work and Math Facts Students Should Know (Algebra, Trig, Calculus)

MathWorld - from Wolfram - extensive math resource

National Library of Virtual Manipulatives - the use of the use of virtual manipulatives, physical objects that help students visualize relationships and applications.

STATISTICS WEB GUIDE - offers additional lesson plans, activities, and test prep material for statistics.

Timeline of Mathemathics - From the University of St. Andrews in Scotland, this timeline of the history of math lists major milestones and links to significant persons in the field of math.

Web2.0Calc - Every imaginable calculator can be found here, including algebraic, geometric, financial, statistical, converters, etc.

Wolfram Alpha - As of now, Wolfram|Alpha contains 10+ trillion pieces of data, 50,000+ types of algorithms and models, and linguistic capabilities for 1000+ domains. Built with Mathematica—which is itself the result of more than 20 years of development at Wolfram Research—Wolfram|Alpha's core code base now exceeds 5 million lines of symbolic Mathematica code. Running on supercomputer-class compute clusters, Wolfram|Alpha makes extensive use of the latest generation of web and parallel computing technologies, including webMathematica and gridMathematica.

WolframAlpha Video Introduction