Learning Science.org

http://learningscience.org/

Basic physical science, life science, environmental science, health, geology, biology, and chemistry for grades K-12.

Math ABC

http://www.mathabc.com/

Interactive math website for kids in 1st to 6th grade.

Glencoe Pre Algebra Worksheets

http://www.glencoe.com/sec/math/prealg/mathnet/pr01/act_01/stguide.htm

Pre algebra worksheets in pdf files.

Math Ops Algebra

http://www.mathops.com/free/index.php

Good lesson plan for algebra that covers review topics and all parts of algebra.
Has lessons w/ audio.

AAA Math

http://www.aaamath.com/B/index.htm

Study site for K-8th grade with a Spanish version.

Subjects Covered:
K-8th grade math topics up to geometry and algebra
Spelling
Vocabulary
States of the USA
World Nations

Features:
Interactive practice with games and pictures
Customizable spelling and vocabulary lists (1st-8th grade)
Math articles
Flags, capitals, states, and nations worksheets and exercises

MSDN Library

http://msdn.microsoft.com/en-us/library/ms123401.aspx

Resources from Microsoft for:
Web development
Game development
Phone development
Cloud development
Data development
Desktop development
Programming languages

Features:
Code samples
Walkthroughs
Articles

Collection of Computer Science Bibliographies

http://liinwww.ira.uka.de/bibliography/

Up to date resources to cite and study in computer science related activities.

Free Computer Books

http://freecomputerbooks.com/

Huge amount of computer science ebooks, textbooks, and lecture notes.

Free Tech Books

http://www.freetechbooks.com/

Whole bunch of free, online, computer science books, textbooks, and lecture notes. Also has a few on math.

Subjects:
Computer Science
- Intro to computer science (22 books)
- Algorithms and data structures (30)
- Object oriented programming (13)
- Theory of computation (18)
- Formal methods (20)
- Functional programming (17)
- Logic programming (12)
- Artificial intelligence (22)
- Computer vision (19)
- Compiler design and construction (19)
- Computer organization and architecture (15)
- Parallel computing (7)
- Concurrent programming (3)
- Operating systems (16)
- Data communication and networks (16)
- Information security (22)
- Information theory (6)
- Digital libraries (22)
- Information systems (10)
- Software engineering (51)
- Game development and multimedia (16)
- Web design and development (10)
- Unix (2)
- Linux (50)
- iPhone iOS 4 (4)
- FreeBSD (4)
- Signal processing (17)
- + more

Programming/Scripting Books
Ada (6)
Assembly (10)
C / C++ (22)
Common Lisp (9)
Forth (2)
Java (23)
JavaScript (5)
Lua (1)
Microsoft .NET (12)
Perl (11)
PHP (5)
Python (15)
Rebol (1)
Ruby (8)
Scheme (1)
Tcl/Tk (3) Math: - Algebra (8) - Linear algebra (21) - Computer aided math (10) - + more

Writing for Engineering and Science Students

http://www.writing.engr.psu.edu/

Writing guidelines for eng and sci students.

Features:

Resources from good universities
Exercises
Articles

Pink Monkey Notes

http://www.pinkmonkey.com/index2.asp

Free literature summeries and notes, similar to SparkNotes but not so branded. Only covers literature and books.

SparkNotes

http://www.sparknotes.com/sparknotes/

Articles and study help about everything. Best known for their literature notes, but their other stuff is pretty great. Can get distracted by the non-academic related articles but you should be fine if you stay in the academic pat of the site.

Features:
College resources:
- College reviews
- College video tours
- General college articles
Articles:
- 25+ subjects, in depth coverage
- Famous SparkNotes Lit. guides
- Famous "No Fear" Lit. series including Shakespere and other classics

Purdue Online Writing Lab

http://owl.english.purdue.edu/

Subjects:

Writing
English as a second language
Job search and professional writing
Research
Style and grammar

Features:

Exercises
Guides
Articles
Teacher and tutor resources

Easy Bib

http://easybib.com/

Online bibliography maker. Put in the format of the bibliography you need, the sources and other information, and it ejects a clean, error-free bibliography, given you put in correct info.

Merriam-Webster dictionary

http://www.merriam-webster.com/

Free, easy to use, popular online dictionary.

Life Write

http://www.lifewrite.com/html/class.htm

Free online writing course by an author.

Features:
Assignments
Articles

Hyper History Timeline

http://www.hyperhistory.com/online_n2/History_n2/a.html

Interactive timeline of history: "Over 2000 files covering 3000 years of history"

Features: Maps, biographies, catagorization of events by science, politics, religion, war, culture, and time periods, free online textbook and other resources.

US Gen Web

http://www.usgenweb.org/

Geneology research for free.

Wikiversity

http://en.wikiversity.org/wiki/Wikiversity:Main_Page

Everyone tells you not to go to Wikipedia for information, but we all do anyway. Here's some free educational stuff with liks to even more.

Subjects: Everything
Features: Articles, links, pictures, lesson plans, ordered curriculum, vast amount of topics in each topic.
Amount of resources on site: 17,000+

Biography.com

http://www.biography.com/people/groups

Biographies of a crap ton of people.