Below is a list I have been working on for awhile now. The list features some very useful Math websites specifically handpicked for teachers to use with their students. The initial list I compiled contained over 40 websites but as I reviewed it deeper I decided to take some out and keep the rest here. I invite you to have a look and share with your colleagues. Enjoy
1- Aplus Math
Aplus Math provides Interactive math resources for teachers, parents, and students featuring free math worksheets, math games, math flashcards, and more.
2- Math TV
Math TV is a platform that features a wide range of math videos covering a plethora of mathematical concepts. These videos are browsable via topic or by textbook.
3- AAA Math
AAA Math offers thousands of arithmetic lessons from kindergarten through eight grade. Unlimited practice is also available on each topic which allows thorough mastery of the concepts.
4- Math's Fun
This philosophy behind this website is to make math learning fun and enjoyable. It features a myriad of lessons and activities provided by teachers and math community from all around the world.
5- Math Central
Math Central is an Internet service for mathematics students and teachers. This site is maintained by faculty and students in Mathematics and Statistics and Mathematics Education at the University of Regina in Canada.
6- Ten Marks
TenMarks provides students with access to hints and video lessons on every problem, so if they can't recall something, or didn't quite get the topic when it was covered in class, they can quickly review the content, and move forward.
7- Maths Frame
Mathsframe has more than 170 free interactive maths games. All resources are designed, by an experienced KS2 teacher, to help children to visualise numbers, patterns and numerical relationships and to develop their mathematical thinking. New games are added most weeks
The SMILE program was designed to enhance the elementary and high school learning of Science and Mathematics through the use of the phenomenological approach.
9- The Math Forum
This is a community of teachers, mathematicians, researchers, students, and parents using the power of the Web to learn math and improve math education. The forum offers a wealth of problems and puzzles; online mentoring; research; team problem solving; collaborations; and professional development. Students have fun and learn a lot. Educators share ideas and acquire new skills.
10- Simpsons math
The Simpsonsmath contains over a hundred instances of mathematics ranging from arithmetic to geometry to calculus, many designed to expose and poke fun at innumeracy.
SuperKids lets you create your own Math drills. Simply select the type of problem, the maximum and minimum numbers to be used in the problems, then click on the button! A worksheet will be created to your specifications, ready to be printed for use.
12- Math Words
This is an interactive math dictionary with enough math words, math terms, math formulas, pictures, diagrams, tables, and examples to satisfy your inner math geek.
13- Math Guide
MATHguide offers a variety of mathematics lessons. Numerous lessons in algebra, geometry, and pre-calculus are available. One can also utilize an assessment resource, called quizmasters.
14- Math League
Mathleague.org offers a number of services focused on enhancing the quality and quantity of competitive mathematical opportunities available to students everywhere. We offer a variety of programs for students in grades 3-12.
15- Math Drills
Math-Drills has thousands of Free Math Worksheets for teachers and parents on a variety of math topics.
16- Math Goodies
Math Goodies is your free math help portal featuring interactive lessons, worksheets, and homework help.
17- Math Aids
Math-Aids is a free resource for teachers, parents, students, and home schoolers. The math worksheets are randomly and dynamically generated by our math worksheet generators. This allows you to make an unlimited number of printable math worksheets to your specifications instantly
18- Math Basics
Math Basics offers help with basic math like subtraction, multiplication, division, fractions, times tables and percents. It provides math tutorials and learning interactives to make learning math easier, and allow you to practice basic math skills at your own level and pace.
19- Get The Math
Get the Math is about algebra in the real world. See how professionals use math in music, fashion, videogames, restaurants, basketball, and special effects.
20- Absurd Math
Absurd Math is an interactive mathematical problem solving game series. The player proceeds on missions in a strange world where the ultimate power consists of mathematical skill and knowledge.