Science: Mathematics

  1. Abbreviations.com -

    Find acronyms and abbreviations for a wide range of topics, including computing & the Internet, academics & science, medical, business, governmental, military, and more.
  2. Academic Earth -

    Full video courses and lectures from the world's leading scholars. Includes a large number of subjects, from Art & Architecture, Economics, History, Law, Literature, Psychology, Test Preparation, and much, much more!
  3. FreeComputerBooks.com -

    Includes a huge collection of free computer, programming, mathematics, engineering, and technical books.
  4. FreeTechBooks.com -

    Online computer science, engineering, and programming books, textbooks, and lecture notes.
  5. Interactive Units Converter -

    Weight, mass, distance, length, speed, temperature, etc.
  6. Khan Academy -

    Over 3000 videos covering topics in math, science, history, civics, art, and test prep. Also offers over 315 practice exercises, teacher resources, and much more.
  7. Mathway -

    A problem-solving site that covers basic math, pre-algebra, algebra, trigonometry, precalculus, calculus, and statistics.
  8. National Academies Press Online Books -

    All PDF titles are now available for free download. Topics cover a wide range of subjects, including biographies, sciences, computers & information technology, education, food & nutrition, health & medicine, and much more! Click on a title to see if it is available for a free download, also includes research tools, online videos, podcasts, etc.
  9. Online Conversion -

    Volume, frequency, cooking, clothing, atronomical, angles, etc.
  10. WebMath.com -

    Free on-line mathematics tutor designed to assist students of all ages.
  11. YouTube EDU -

    Videos and channels from YouTube college and university partners, including Dartmouth, Stanford, USC, and MIT.