Ask Dr. Math
Math help categorized by school level and topic, with calculators. 

Math.com
Math tools, definitions and quizzes by topic.

Math in Daily Life
Math concepts for the more literal learner.

Create A Graph
Create graphs and charts for school projects.

Math Slice
Play games online to help learn mathematical concepts.

Chemicool Interactive Periodic Table
Learn the specifics of the different elements.

Chem4Kids
Explains concepts, has an interactive periodic table, glossary and quizzes by topic.

Physics Classroom
Physics concepts explained! Organized by topic. 

Encyclopedia of the Earth
Online earth science reference.

Human Anatomy Online
Explore the human body system by system, complete with interactive charts. 

The Solar System
A multimedia tour of our solar system.

This Day in History
Daily historical trivia by date.

Presidents of the United States
Biographical information and statistics on US Presidents.

American Rhetoric
Databank of historical American speeches. 

Time Magazine Archive
Time Magazine articles from 1923 to the present.

History World
Historical resources that “make history make sense.” 

Heilbrunn Timeline of Art History

Online Newspapers
Thousands of world newspapers organized by country.

New York Times Learning Network
Contains links to “Science Q&A,” “News Summaries,” “Test Prep Question of the Day,” and more!

Learning Express

Study Guide Zone – ACT Prep

Study Guide Zone – SAT Prep 

Study Guide Zone – PSAT Prep

Kaplan's Quizbank - ACT and SAT Prep

InfoPlease
Free online reference materials: atlas, almanac, dictionary, thesaurus, timelines, and more!

Citation Machine
Compose your research paper bibliography here. 

MULTNOMAH HOMEWORK CENTER
Extremely well organized homework links