Arithmetic question? Ask Dr. Math.

Dr. MathOver the years, many people have written to the Math Forum at Drexel University in Philadelphia, Pennsylvania, with questions about their math homework. The Math Forum has collected these questions and answers in a searchable archive arranged by general grade level. Can’t find the answer to your question already on file? Feel free to submit your query to Dr. Math.

http://mathforum.org/dr.math/

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A+ Research and Writing for High School and College Students

A+ Research and Writing for High School and College StudentsKathryn L. Schwartz wrote this guide while a student of the Information and Library Studies program at the University of Michigan. It not only teaches writing skills but also how to research a paper using both print and online sources.
http://www.ipl.org/div/aplus/

Blinded by science: How Everything Works!

How Everything WorksLouis A. Bloomfield, professor of physics at the University of Virginia, has been answering readers’ questions regarding the physics of everyday things since 1997. Students can search Bloomfield’s archive of revealed wisdom by keyword or topic. Find out why coffee seems warmer after you stir in cream, even though the cream is cold (transfer of energy). Discover the reason that paper towels absorb water (cellulose binds to water easily). And finally, uncover ways to make your coffee so hot in the microwave that the cup explodes. Science is fun!

http://www.howeverythingworks.org/

Find full-text classics online at Online Books Page

Online Books PabeIt’s all about text, baby. John Mark Ockerbloom, a digital library planner and researcher at the University of Pennsylvania, created and maintains this definitive, searchable directory to books freely readable over the Web.  Nothing new here, because he only links to full text in the public domain, that is, books published before 1923. On the other hand, you can pull up a copy of any classic you might need. Search by author, title, or Library of Congress subject heading. Find your Chekhov, Mark Twain, and Edith Wharton here!
http://onlinebooks.library.upenn.edu

Visit CliffsNotes to understand that book.

Cliffs Notes

The name may be synonymous with a big cheat, but really, the synopses offered by Cliffs Notes can help students understand and remember what they have read. This “free” site is packed with ads, but the complete content is here.  Download analysis of individual titles to your iPhone for 99 cents, or listen to the free “Cram Casts” on the site or in iTunes. Cliffs Notes also offers online study guides for science, math, and foreign languages.

http://www.cliffsnotes.com/