Created by retired teacher Linda Guterba, this site categorizes links according to the curriculum covered in most U.S. schools, be it ancient Rome or the solar system. You'll also discover online atlases, dictionaries and encyclopedias.
An exhaustive roundup of educational links, developed by a consortium of colleges and universities, complete with a homework help section. Does your child need an idea for the science fair? This site leads you to a link of projects with instructions.
If you've forgotten what an integer is, you'll need this site's arithmetic refresher courses. From basic addition and subtraction to ratios, algebra and geometry, it takes you through the steps of finding a solution.
Take a virtual tour of the natural world, including its people and places, flora and fauna. When your third grader asks you the name of the red-eyed tree frog (Agalychnis callidryas) or the population of China (1.3 billion),travel here.
From the folks at InformationPlease/Pearson Education comes an attractive, easy-to-navigate reference site. Flash cards, multiplication tables, history timelines, biographies of U.S. presidents...they're all here.