Selected Web Resources are links to exemplary mathematics education resources on the internet. They can be used to improve the teaching and learning of mathematics for all students. They can help you understand and apply the NCTM Principles and Standards for School Mathematics.

Each of these web resources has been carefully reviewed and approved by a panel of experts. This collection will grow and be modified based on review by the NCTM Illuminations Advisory Panel. See the Selection Criteria and a list of the review panel members. You can nominate a site using this Application Form.

Click on a link below to see a summary page which briefly summarizes the content and purpose of the site. Click again to go to the site. Close the window of the external site and you're back at Illuminations.

Math Forum (All topics / All grades):
The Math Forum has information, challenges, and activities in mathematics across all grade levels.

Figure This - Math Challenges for Families - (All topics / Grades 6-8)
Exciting, out-of-school learning activities that illustrate the worldclass mathematics that students should be doing in middle school.

Eisenhower National Clearinghouse For Mathematics and Science Education (All topics / All grades):
This site gives teachers a plethora of educational information, resources, and activities across all grade levels.

The Guide to Math and Science Reform (All topics / All grades):
One-stop directory for organizations, projects, and resources in the field of math reform.

Mathnotes English to Spanish Math Glossary (All topics / All grades):
An invaluable resource for bilingual math students.

BBC Education Web Guide, Math (All topics / All grades):
A superior collection of well-annotated links.

The MacTutor History of Mathematics Archive (All topics / All grades):
The MacTutor History of Mathematics Archive will help students appreciate the human side of math by becoming acquainted with the actual men and women who have created it over the centuries.

Interactive Mathematics Miscellany and Puzzles (All topics / All grades):
Alex Bogomolny's Interactive Mathematics Miscellany and Puzzles (also called Cut the Knot, in honor of another noteworthy Alexander) is an irresistible collection of puzzles, problems, and paradoxes.

New York Times Mathematics Lessons (All topics / Grades 6-12):
These well-constructed lessons let students see for themselves how math skills can improve their understanding of current events.

Project Interactivate (All topics / Grades 6-8):
Excellent online lesson plans, activities, and discussions for middle school math.