Fact Monster is a free reference site for students, teachers, and parents. Get homework help and find facts on thousands of subjects, including sports, entertainment, geography, history, biography, education, and health.
Via Tony Molnar
With a library of over 3,000 videos covering everything from arithmetic to physics, finance, and history and hundreds of skills to practice, we're on a mission to help you learn what you want, when you want, at your own pace.
Via Richard Baez
A+ Click is a collection of math problems, puzzles, and brain teasers on numbers, geometry, algebra, data analysis, probability, and word probles. Math skills assessment for grades K1 K12. Practice Mathematics! I really like the fact that it isn't boring, repetitive, nor monotonous like the typical programs schools seem to purchase and drill their kids on. Kids won't tun on to web sites that have the prementioned components- even if they are online. This site allows the student to chose from hundreds of problems on the templates that come up and moves them to the next level if they are scoring well.
Learn comparing and ordering fractions with online interactive free games, for teaching 3rd grade and 4th grade. These are like small online lessons and include also practice of fractions with different denominators.
Originally, I found this site when it was part of a 25 Best posting. Then, the infamous 49% site discover Jerry Marble dug a little deeper and uncovered its hidden treasures. Early best bet here is the Grand Prix Racing Multiplication Game- but you can go grade levels across the board with a variety of games here. Either play your friends or the computer.
Fun and free educational games for kids in K-8. Featuring multiplayer learning games, math games, language arts games, and much more!
This great maths site has an amazing collection of maths self-marking problem solving questions. Search by age level or topic. This covers both Primary and Secondary levels. Topics include numbers, geometry, algebra, data analysis, probability and more.