A+Math (completely free; interactive flash cards, game room, homework helper, worksheets)
AAA Math (grades K-8; online math materials for students; lessons, games, interactive practice; glossary)
AIMS Puzzle Corner (over 100 interesting puzzles to help students learn to enjoy puzzles and the mathematics behind them; categorized by type, with increasing difficulty within each type)
Allmath.com (flash cards, converter, games, biographies, math glossary, multiplication table, kids resources, kids references, math career exploration, math humor, teacher resources)
Almost Everything You Need for Using Spreadsheets in the Classroom
ArithmAttack (How many computer-generated problems can you answer in 60 seconds?)
At Home with Math (K-5)
Basket Math Interactive (grades 4-10)
Brainchild.com (good TCAP practice; click on your state)
Calculus-Help.com (tutorials, fun stuff, problems, more)
Centre for Innovation in Mathematics Teaching
Cody's Science Education Zone (grades 6-12; lessons available in physical science, life science, inquiry, technology, math, and humor; a must visit!
Coolmath.comhttp://coolmath.com/home.htm (ages 13-100, calculators, message boards, games, math lessons, math links, careers in math)
Coolmath4kids
Computation Castle
Count Us In (K-5; 15 math games that are dynamic & entertaining; counting, addition, subtraction, sorting, and ordinal numbers; time, chance, volume; students can create their own patterns, play a virtual memory game, or search for the star in the surprise box)
Cut-the-Knot Interactive Mathematics Miscellany
Discovery School's WebMath
Education for Kids Math Exercises (K-8; most drills are free)
Eric Weisstein's MathWorld
Eratosthenes of Cyrene (grades 6-12; contains historical info about Erathosthenes & ancient Greek mathematics, an explanation of how the sieve works, and a virtual sieve that can determine whether any number is prime; excellent vehicle for integrating history, geography, social studies, and math)
Exploring Data: K-8 Lessons on the Web (standards-based lessons)
Factors and Multiples
Figure This! (upper elementary, middle school, early high school; developed by math teachers; free math resources, activities, and challenges; encourages parental participation)
Fraction Game Tool (grades 3-8)
Gallery of Interactive Geometry
GoMath (grades 10-12; good math helps)
Illuminations (grades K-12 - explore the connections between art and math)
Interactive Learning in Calculus
Interactive Mathematics Miscellany and Puzzles
Interactivate (grades 3-5; online interactive activities complete with lesson ideas; factoring, fractions, comparison, estimation, too much to list)
KidsPlace Brain Teasers (grades 3-8; a weekly problem to solve, broken down by grade level, as well as an archive of past problems)
Mega Math
Mad Scientist Network
Math Archade from Funbrain
Math Archives (supported by the National Science Foundation and the University of Tennessee Science Alliance & the Department of Mathematics at Calvin College and UTK - teaching materials, lessons, links, & more)
Math Baseball from Funbrain
Math Cats (makes learning math fun for kids; wild, cat-based interactive animations that explan statistics; projects that kids can do at home as well)
Math Central (Internet service for math teachers and students from kindergarten to grade twelve)
Math Flash (grades K-5; an online flashcard game; addition, subtraction, multiplication, division)
Math Forum Lesson Plans, Activities, links, more (pre-K-grade 5; middle school; high school)
Math in Daily Life (sponsored by the Annenberg Foundation)
Math is fun.com (grade 3-12; however some more complex stuff, and some easier)
Math League Help Topics from Math League Press (grades 4-8; all concepts with rules/examples)
Math Lessons and Resources
Math Live from LearnAlberta (videos similar to BrainPop where students are carried through problem solutions in all areas of math)
Math Mastery (basic math activities)
MathMol (grades K-12 - about math and molecules; online images; free)
Math Online Worksheets (grades K-5; randomly generated worksheets)
Math - Primary Resources (hundreds of lesson plans, ideas, and worksheets)
Math Puzzles (puzzles, problems, interactive puzzles, mazes, magic squares)
Math Playground
Math Resources for Teachers - Jim Reed
Math Stories.com ("The goal of this math website is to help elementary and middle school children boost their math problem solving and critical-thinking skills. has over 15,000 interactive and non-interactive NCTM compliant math word problems for children to enjoy! Word problems are available in both English and Spanish. MathStories.com is the website for busy teachers, eager students, and involved parents. MathStories.com is comprehensive and easy to navigate.")
Math TV Grades 6-12 - Math videos with how-to's in every area of math
Math Word Problems (grades 5-12)
Mathematics Lessons that are Fun
Mathematics of Cartography
MegaConverter (converts almost anything)
MegaMath (from the Los Alamos National Laboratory; website with challenging problem solving activities)
Mrs. Glosser's Math Goodies (select students, teachers, or parents)
(NCES) National Center for Education Statistics Kids' Zone (select Graph and create your own with your data or see examples of all types of graphs; select Dare to Compare, select subject, grade, and # of questions to compare yourself with students nationally; select Chances to learn about probability)
Multiplication Practice from Jonathan Ferrell - Extensive
National Library of Virtual Manipulatives (preK-12; excellent interactives)
New York Times - Daily Lesson Plans - Mathematics
Nick's Mathematical Puzzles (150+ math puzzles)
Online Conversion (fun and interesting conversions)
Plane Math from NASA
Practical Money Skills for Teachers (preK-12 & special needs; lessons)
Puzzles & Games
My Secret Number
Peg Puzzle
Tac Tix
Mathematics Nrichment: Daisy
Mathematics Nrichmeng: Number Daisy
Make Five (primary age; students practice arithmetic facts while trying to get 5 markers in a row)
Math Mayhem (primary age; fast-paced, multi-player game; students compete in real time against other participants from around the world)
Quia's Math Journey (travel around the world by answering math problems; select your skill set to generate your journey)
School Spreadsheet Safari (definitions, lessons, examples in all content areas)
SCORE Mathematics Lessons (grades K-12)
Shodor Education Foundation (curriculum section; interactive elementary and middle school lessons)
Single-Use Spreadsheets in the Classroom
SMILE (science & math's initiative for learning enhancement)
Speed Grill Package (multiplication)
Soduko from Funbrain
Suzanne's Mathematics Lessons
SuzyRed's Math Page
Teaching Mathematics in Middle & High School (from students at Barry University)
The Exploratorium (offers some of the most creative interactive activities of the Web in science, math, & human perception, including opportunities to follow expeditions online, visit the Hubble telescope, look through live cameras, participate in Webcasts, build projects and explore the science behind topics such as baseball and cycling)
The Eyeballing Game ("The game works by showing you a series of geometries that need to be adjusted a little bit to make them right." The game rotates through the seven tasks three times and then provides you with an overall average of your accuracy along with where you rank with the last 10,000 people who have played the game.
The Math Forum (select Students or Teachers)
The Math Forum @Drexel (math lessons and activities in areas for K-2 or 3-5; also good links)
The Math Glossary (grades 1-8; listing by grade level of math terms, definitions, and examples)
The Maths Internet Guide (interactive activities online)
The Product Game (factors and multiples)
The Science & Mathematics of Lighthouses (educational resource honoring the design, history and spirit of lighthouses; geometry, trig, algebra, physics, chemistry, history, more)
The Stock Market Game
Thinkquest Spreadsheet Classroom Activities in ALL Subjects
Toon University Math Games (grades 1-5; basic math skills)
Towers of Hanoi
UTK's K-12 Math Teaching Materials (lesson plans, software, contests & competitions, more)
Visual Calculus (modules that can be used in teaching or studying calculus)
Word Problems for Kids (grades 5-12)
Worksheets4Teachers (ready-made or create your own)
