Algebra

 Algebra, is a group of algebra resources at the AAA Math site. This page includes an Algebra worksheet generator, some interactive algebra games and other resources. Check it out.

 Algebra, is another web page with a group of links to algebra sites including "Algebra fun with calendars" and many others.

 All Elementary Mathematics - Study Guide - Algebra, is list of algebra topics and links to help about these topics. I haven't checked out the links yet, but they look promising.

 Great Math Web Sites, has some excellent links for algebra including three links for solving equations, several links about Pi and an excellent link about prime numbers.

 Internet Resources for Algebra, has links for lessons, tutorials, software and more. This is a very useful resource.

Calculus

 Math by Topic: Calculus, has calculus resources for students and teachers.

 Great Math Web Sites, is the same site as above and also has many links to calculus sites.

Geometry

 Cynthia Lanius's Lessons: Geometry Online, has links to activities for middle school and high school geometry students.

General Elementary Sites

 Count Us In are math games for younger students. Cute and engaging.

 First Grade Backpack-Arithmatic is a page with a long list of sites for first grade students.

 Math Standards - 3rd Grade Student Performance Skills has a very impressive annotated collection of links to math sites for third grade students which are organized according to skills. Very easy to use. This link will take you to the general grade level help page. From there you can move to the grade level that you want.

General Math Sites

 A+ Math, is a site for helping students develop their math skills online. This site has a math game room, flashcards, and a math word find puzzle. You can also create your own flashcards and worksheets to print out and work on offline. There is also a homework helper for students to use to check their solutions to their math homework. Games are in Java and non-Java version and cover addition, subtraction, multiplication and division.

 AAA Math, is a site that has math resources for students from Kindergarten to Grade 8. There are interactive lessons for students and lesson plans for teachers, as well as a number of resources for math teachers. Some of the contents covered by this site are fractions, percents, geometry, estimation, exponents, decimals, multiplication, money and much more.

 Abacus International Math Challenge, is a site for students from grades 3-8. Students are presented with interesting and challenging problems.

 Bluedog Can Count, gives students a chance to solve math equations.

  Cool Math 4 Kids, is a wild little site that has a variety of math activities with the aim of making math fun. There's math for kids as young as the 3-5 age group. Other areas of this site are: fractals, fraction lessons, geometry, jigsaw puzzles, games and other things. This is site work a look.

  CuriousMath.com, is a forum about math. I just discovered this so I haven't had time to check it out. More later.

 Fractions! Fraction Math Worksheets has an enormous list of fraction material. This is the place to go if you are working on fractions.

 Fun Mathematics Lessons by Cynthia Lanius has a variety of activities for children of various ages. Not quite as much fun as some of the things to do at Cool Math, but interesting nonetheless.

 Funbrain.com Math Baseball, is a place to practice your math skills in a fun way. You can play this baseball game with fractions as well as whole numbers.

 Internet Math Sites for Children, has 54 sites with comments for student use. This site can be used by students from kindergarten through Middle School. There are also resources for teachers on this site. Check this site out - it's an excellent resource.

 Internet School Library Media Center Mathematics Resources K-12, offers mathematics history, organizations, puzzles and games, tutorials, lesson plans, math education and more. Separate pages are devoted to geometry, algebra, calculus, statistics. Be sure to preview all categories to find information you need since content will be distributed across different categories.

 Internet Sites for Math Teachers, is a list of math sites organized by topic. This is a very extensive list, but, unfortunately, there are no comments about the sites so teachers have to sift through all of them to see what is available. There are algebra and trigonometry sites for older students and basic sites for younger students.

 Interactive Mathematics Activities, is a site filled with things to do for math students of all ages. Some of the topics are: algebra, arithmetic, geometry, logic, fractals, probability, calculas, and more. Most of the problems here are difficult.

 King's List of On-line Math Activities is another collection of excellent sites that are sorted by category. Some games are included in these links.Topics range from beginning math to prealgebra and geometry. Just a comment to let my math students know that they'll find some math games to use here. This is an outstanding site.

 Math Central, is an internet service for math teachers and students from grades K-12. There is a resource room where teachers can exchange ideas, lesson plans, and resources. The resource room has a search engine to help you get what you need quickly and effeciently. This site is available in French and English.

 Math Forum has resources for K-12 and college teachers and has the ask dr. math page.

 Math in Daily Life, is web site that explores how math is used in daily life. There is really no interactivity here, but this would be a good site to use in response to that old question, "Why do we have to learn math?

 Math Strategies: Integrating the Internet, is a resource for an online course offered by the Utah Education Network. This page includes: integration tips, lesson plans, projects, activities, math websites. This is a teacher resource.

 Math Teaser Challenge, has a new math teaser every month. An archive of past challeges is also on site.

 Mathematics is another collection of math sites with some annotated. This site really has a wide variety of sites.

 Mathematics, is a collection of resources for teachers to use in their classrooms.

 Mathematics Education in Canada, has links to many Canadian math sites in both English and French.

 Mathematics Education Links Canadian, is a site for teachers. This has links on math put together by the faculty at the University of Western Ontario.

 Mathematic's Lesson Plans, has a list of lesson plans from K-12 with the emphasis on K-5. Easy to navigate site with a number of useable resources. Definitely worthwhile.

 Maths File - BBC Education, has some math resources and games.

 Mathwork -- on-line math worksheet generator, is another site where you can go to generate math worksheets for addition, subtraction, multiplication, division, measurement, time, fractions, and graphing.

 Ms Peshette's Fun and Games for Thinking Students, has links to a variety of math sites. Good links here.

 Multiflyer, is a very cool Flash game for learning the times tables. I want to be able to make something like this.

 National Library of Virtual Manipulatives for Interactive Mathematics is a collection of some excellent sites that are sorted by category.

 Numbers, has information about the numbers 1-30, or a page for each day of the month. I like the concept.

 Reach Every Child|Mathematics, has math resources for every level. This site looks very promising, but I've yet to explore it fully.

 Selected Web Resources, is an amazingly cool site. Use this dynamic table to selectively search over 1100 carefully reviewed Internet math resources. Selected Web Resources are useful mathematics education resources on the Internet. They can be used to improve the teaching and learning of mathematics for all students and can help you understand and apply NCTM's (National Council of Teachers of Mathematics) Principles and Standards for School Mathematics.

 Superkids Math Worksheet Creator, is the place to go to make worksheets on addition, subtraction, multiplication, division, fractions, rounding, and greater than and less than.

 National Council of Teachers of Mathematics, is the home for the United States organization of math teachers.

 Welcome to the Math League specializes in math contests, books and computer software meant to stimulate interest in mathematics for students from 4th grade through high school. There are some excellent possibilities here.

General Middle School Sites

 Cool Math Sites have elementary, middle school and high school math teacher resources. There are well over 100 sites listed here and categorized according to topic. Included are some math humor sites which I like even though my middle school students think they are fairly geeky. Most of the sites listed are for middle and high school students. This is a cool site for sure.

 Figure This! Math Challenges for Families is a site produced by the National Council of Teachers of Mathematics. You can find mathematical challenges for middle school students that they can do at home with their families. Each challenge includes: a description of the important math involved, a note on where the math is used in the real world, a hint to get started, complete solutions, a "Try This" section, additional related problems with answers, questions to think about, fun facts related to the math, and resources for further exploration. Topics that are covered include; algebra, geometry, measurement, number, statistics and probability. Check this site out.

 Fun Pi Facts is a site with just what the title says, some fun facts about that wonderful Pi. Great for a little fun with your students if they are studying Pi.

 Interactive Mathematics Miscellany and Puzzles, has a group of links about mathematics. For use by older students.

 Laura Chandler's File Cabinet has a lot of links to resources for math teachers such as activities and worksheets on time, measurement, order of operations. I found these resources helpful when working with my Middle School math students.

 Math Forum: Middle School Teachers: Collections of Lessons has a wide selection of lesson plans for middle school students. This is a valuable resource for middle school math teachers.

 Middle School Math Web Sites is a collection of some excellent sites that are sorted by category.

 Middle School Net, has a long list of sites organized by topics - general, algebra, geometry, and tessellations. Some of the sites have a one line annotation. This is a good site to look for specific resources for the middle school student.

 Notes and Literature on Prime Numbers, has some very useful information about prime numbers including the Sieve of Eratosthenes.

 Plus Magazine...Living Mathematics, is an interesting math journal for faculty from middle school on up. I read an interesting article on "101 Uses of a Quadratic Equation. Cool.

 Prime Numbers, offers an advanced discussion on prime numbers. Great stuff if you are teaching advanced math in high school.

 The Cereal Box Problem, is a lesson in expected value and probability. This lesson includes teacher's notes, how to model the lesson for your class, a java simulation of shopping, and further questions on expected value. A valuable site for those teachers working on probability. Appropriate for Middle School and High School students.

 Wired Math - Free Math Games and Resources for Grades 7, 8, and 9 is a free site with some fun activities. The activities are in line with the Ontario Mathmatics Curriculum of 2005. These activities can also be used as enrichment activities by students in grades 4, 5 and 6.

Humor

 Math jokes collection by Andrej and Elena Cherkaev, is a fascinating collection of math jokes aimed at the professional and high school/college students.

 Mathematical Jokes is another collection of math jokes which run from the fairly sophisticated to the old, "What did one math book say to the other?" This site also has Islamic information about Ramadan, etc. Interestingly diverse site.

 Surfing the Net with Kids: Math Jokes, has about twenty math jokes submitted by elementary and middle school age students.

 Teacher Humor: Math Jokes, has three pages of jokes that are mostly at the elementary school level. I tried a few on my middle school students, and they figured that I needed a vacation.

 The Math Humor Page, is a collection of links to sites with math humor and jokes. Worth a look.

Pi

 Math in Daily Life - Pi , is a short, easy to understand page on what Pi is.

Prime Numbers

 The Prime Database: The List of Largest Known Primes, is the place to go if you want to find out about the largest prime numbers.

Problem Solving Sites

 Colorful Mathematics, has some problem solving games. It is a series of educational software presenting mathematical concepts for students from K-12. This is what the site has to say about itself: "The goal of these coloring games is to help students experience a mathematics problem, and understand its difficulties while achieving partial solutions. This process is at the root of mathematical and scientific reasoning, and the aim of this software is to help develop this skill. Concrete mathematical and computer science problems from graph theory. have been chosen and transformed into coloring games. The computer offers appealing tools for drawing and coloring, and is also used to provide immediate feedback to individual students reflecting their particular level of achievement. Throughout the course of each game, the computer checks for mistakes and simple algorithms have been programmed to challenge the students to improve on their results."

So check this site out for yourself and see what you think about it.

 Word Problems for Kids, has word problems for students from Grade 5 to Grade 12.

Trigonometry

 Applications of Trigonometry, is a short page with java diagrams that explain the applications of trigonometry. This site is a good introduction to trigonometry.