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LearningExpress Library
Practice taking tests online, including SAT, ACT, TOEFL, adult basic skills, civil service, law enforcement, military, EMS, postal services, firefighter, and U.S. citizenship. more info.
Science In Context
Includes overviews, biographies, periodical articles, images and videos, and detailed experiments on popular science topics. more info.
  Webmath 
Assistance is provided for basic math, algebra, geometry, trigonometry, and calculus.
The Math Forum 
A math clearinghouse for all ages with links, examples, games, and interactive exercises.
Wolfram MathWorld 
Interactive mathematical encyclopedia.
Online Conversion 
Convert just about anything to just about anything else.
Create A Graph 
Use this tool to create a graph specific for your data; choose between bar, line, area, pie, and XY graphs.
MacTutor History of Mathematics Archive 
Biographical information on mathematicians throughout history, and the history of mathematical systems.



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