- Four Coloring Maps - Mario Stefanutti
Personal notes and ideas from a computer software engineer in pursuit of a "very easy pencil and paper proof of the four color problem." Posts, which date back to January, 2011, have included "Four color theorem: slow motion maps" and "Counting maps."
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- FoV
Puzzles and pointers on math and programming from a future secondary school math teacher in England. Blog posts, which date to March, 2010, have included "Make 42," "Find a, b and c," "Programming Mahjong Scoring," "Broken Geometry," and "Using Mersenne
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- freemathtexts.org - Alain Schremmer
Original texts that emphasize a very few but very powerful ideas; appeal to common sense and make no assumption of any kind about the students; and focus on helping readers convince themselves about mathematics. Written for use in developmental mathematics
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- f(t) - Kate Nowak
A blog by a self-described "full-time math teacher, curriculum inventor and refiner, adolescent listener, correspondence-to-parents writer, practice problem feedback giver, and example-setter" who has taught high school math since 2005. Posts, which date
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- functionspaces - eGroups
Subscribe to and join a free discussion about functionspaces and related topics. From eGroups' Math discussion groups.
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- Fun With Num3ers
A blog of mathematical puzzles, mostly in number theory. Posts, which date back to January, 2012, have included "Using digits 1, 2, 3, 4, 5, 6, 7, 8 and 9 only once (Part Two)," "Pythagorean triple – Digits Reversed," "Concatenation puzzle: when (A ||
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- GalaxyGoo
An interdisciplinary, volunteer thinktank dedicated to exploring expressions of science and math with online technologies, for public benefit. Read interviews of scientists; explore math such as the sine curve with Flash, participate in forums and blogs,
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- garysmathsblog
One maths teacher's "personal musings" about his experiences, as well as maths resources and teaching tips to help teach maths. Blog posts, which date back to May, 2011, have included "Fraction word problem," "Dyscalculia," "Mean, median and mode rhyme,"
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- gealgerobophysiculus - Evan Weinberg
Thoughts on teaching, learning, and "the crazy process of having fun doing both with students." Posts, which date back to September, 2011, have included "How China Keeps Me Learning: Part I," "Lens Ray Tracing in Geogebra," "Take Time to Tech – Perspectives
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- GeoGebra Central - Guillermo Bautista
A collection of GeoGebra applets dating back to August, 2010: "Systems of Linear Equations," "The Angle Trisector," "Approximating Pi," "Area of a Trapezoid," "Four Leaf Petal," "Polygons with Equal Area," "Tracing the Derivative," "Paper Folding: Locating
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- Geometros
Makers of the CAD system SolidGraph, built on sgCore, a solid-state modeling library that allows programmers to add CAD system functionality to their programs. Read product reviews; get plugins; post to support forums and consult FAQs; see lessons, examples,
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- geometry-announcements - Math Forum
A discussion group accessible as a Web-based discussion, a mailing list, or a Usenet newsgroup, for information about lectures, announcements, special meetings, and upcoming events concerning geometry. Read and search archived messages; and register to
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- geometry-college - Math Forum
A discussion group accessible as a Web-based discussion, a mailing list, or a Usenet newsgroup, for discussions of topics covered in college geometry, problems appropriate for that level, and geometry education. Read and search archived messages; and
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- Geometry Discussion Groups - Math Forum
A gateway to the archives of the Math Forum's online electronic community comprising eight geometry discussion groups for all those interested in geometry. Access current news or follow a link to threaded past discussions to browse or search the archive
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- geometry-forum - Math Forum
A discussion group accessible as a Web-based discussion, a mailing list, or a Usenet newsgroup. This was the main group for the Geometry Forum, the Math Forum's previous incarnation. Not currently used. Read and search archived messages.
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- geometry-institutes - Math Forum
A discussion group accessible as a Web-based discussion, a mailing list, or a Usenet newsgroup. Postings include planning for and information about geometry institutes held around the country. The Forum's teacher workshops hold discussions on this group
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- geometry-pre-college - Math Forum
A discussion group accessible as a Web-based discussion, a mailing list, or a Usenet newsgroup, for discussions concerning school geometry curricula, teaching geometry, new software and texts, problems for students, and supplementary materials such as
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- geometry-puzzles - Math Forum
A discussion group accessible as a Web-based discussion, a mailing list, or a Usenet newsgroup, for interesting problems and conundrums that require only a knowledge of elementary geometry, and discussions of solutions. Read and search archived messages;
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- geometry-research - Math Forum
A discussion group accessible as a Web-based discussion, a mailing list, or a Usenet newsgroup, for research announcements, seminars, reviews, and abstracts of papers and discussions of same, and ideas for research. Read and search archived messages;
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- geometry-software-dynamic - Math Forum
A discussion group accessible as a Web-based discussion, a mailing list, or a Usenet newsgroup. This group focuses on discussion of such geometry software programs as The Geometer's Sketchpad and Cabri Geometry II. Read and search archived messages; and
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- Get Help With Your Math Homework - Cramster.com
Find homework solutions from text books, lecture notes, and solved exams written by college professors for their courses. Subscription fees required. Ask questions and answer other members' questions "for self practice, karma points and goodwill" on the
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- GFBrandenburg's Blog - Guy Brandenburg
In his opening post, Brandenburg wrote, "I have been doing some research on educational progress (or lack thereof) in the Washington, DC school system before and after the reign of our media-darling school Chancellor, Michelle Rhee...." The retired high
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- GOMATH - Cubic Science, Inc.
An Internet site to help high school students (grades 10-12) of all levels with math skills. Programs such as Algebra 1 offer an interactive guide through a course and help students build up math skills and confidence. Math Programs are 4-6 week curricula,
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- Google Groups Discussion: TI-Nspire - Rex Boggs, moderator
For users of the TI-Nspire handheld, Rex Boggs has set up a moderated discussion group at Google Groups. The purpose of the discussion is to share knowledge and problems to make the technology more productive, enjoyable and enlightening. If you are interested
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- Gowers's Weblog - Timothy Gowers
Blog by a Cambridge University professor interested in analysis, combinatorics, arithmetic combinatorics, and "general questions about mathematics, and how it is discovered and transmitted -- hence this blog." Posts, which date back to September, 2007
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- Great Maths Teaching Ideas - Will Emeny
Emeny's blog of teaching ideas and resources, which dates back to June, 2010, has included posts such as "Investigating the sum of interior angles in polygons," "Can you make practising the times tables fun? Yes, just give me three dice," "When angles
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- The Great Probability Challenge - Daniela Cupples
In this hands-on probability and statistics learning experience, students perform a coin toss experiment, then predict, analyze, and present their experimental findings with visual graphing representations. Throughout the 2010-2011 school year, students
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- GreatTeacher.net - Robin Alexander
GreatTeacher.net provides free resources to the teaching community: user-friendly job classifieds, email, discussion areas, an interactive calendar, resource links, and other services.
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- Harvard Sports Analysis Collective
Dedicated to the quantitative analysis of sports strategy and management, this Harvard student organization focuses on the intersection of sports, sports business, statistics, and problem solving. Original analysis and research into sports analytics authored
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- HASTAC Initiative - Humanities, Arts, Science, and Technology Advanced Collaboratory
HASTAC ("haystack") is a network of individuals and institutions inspired by the possibilities that new technologies offer us for shaping how we learn, teach, communicate, create, and organize our local and global communities. HASTAC is open to anyone;
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- Holistic Numerical Methods Institute - Autar Kaw
Open courseware, books, primers, journal abstracts, PowerPoint presentations, multiple choice tests, and other resources supporting a typical course in Numerical Methods for undergraduates majoring in science, technology, engineering and mathematics (STEM).
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- HomeworkCentral - HomeworkCentral.com, Inc.
A free online learning environment designed to provide students, parents, and teachers with links to selected Internet sites. Includes a Mathematics Discussion Board and, for teachers, a lesson plan search (search for math).
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- iKodeko - iKodeko Software, Inc.
Free online math quizzes cover least common multiple (LCM), Roman numerals conversion, number to words, and algebra word problems. Review performance, and participate in discussions around individual test items. Download the iKodeko Worksheet Maker freeware
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- ILoveMath.org - Shelli Temple
ILoveMath.org is a comprehensive site for middle and high school math teachers full of "ready-to-use" lesson plans, worksheets, activities, and more. The site also features an active message board for math teachers to collaborate.
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- IMAGINARY - Mathematisches Forschungsinstitut Oberwolfach
A platform for open and interactive mathematics. Explore events, exhibitions, programs, galleries, hands-on, and films -- and share your own activities, projects, and discussions. Started as a maths and arts exhibition for the German Year of Mathematics
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- Infinite Sums - Claydon
Blog by a high school math teacher in Houston, Texas, who "decided the corporate engineering world was not for me, so now I joke around with teenagers and teach them math. And soccer." Posts, which date back to June, 2011, have included "Standards Based
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- Infinite Tangents - Ashli Black
This "secondary mathematics education podcast for teachers," begun in March, 2013, invites other high school math teachers to respond to prompts such as "How do you start your teaching day?" and "What would you like to get done in the times between classes?"
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- Informal Math - Sam OlderbakOlderbak
Blog by a high school mathematics teacher in Phoenix, Arizona, "interested in technology and how it can be used to enhance student learning." Categories of posts, which date back to April, 2013, include 3 ACT.
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- Innovate - James L. Morrison, Editor-in-Chief
A peer-reviewed bimonthly e-journal on research and practice of the use of information technology to enhance education. Innovate invites users to "... do more than simply read. Use our one-button features to comment on articles, share material with colleagues
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- Institut Pengembangan Pendidikan Matematika Realistik Indonesia
Indonesian implementation and dissemination of Pendidikan Matematika Realistik Indonesia (PMRI), the Dutch-inspired Realistic Mathematics Education (RME). Blog posts -- a few in English, most in Indonesian -- date back to August, 2009.
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- The Interactive Mathematics Classroom - Rex Boggs
A digital library of third-party technology resources for teaching mathematics, from kindergarten to calculus. Register to comment on interactive whiteboard files, Powerpoints, TI-Nspire documents, Excel spreadsheets, and other digital resources. RSS
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- Interactive Mathematics Miscellany and Puzzles - Alexander Bogomolny
"The peculiar beauty of Mathematics lies in deduction, in the dependency of one fact upon another. The less expected a dependency is, the simpler the facts on which the deduction is based - the more beautiful is the result." This award-winning site offers
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- InterMath - The University of Georgia
InterMath is a professional development effort designed to support teachers in becoming better mathematics educators. InterMath workshops provide an ongoing support community, a lesson plan database, and a discussion board. The site provides mathematical
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- The International Mathematics Teacher and Educator Network
The International Mathematics Teacher and Educator Network (IMTEN) "aims to bring together all those involved in mathematics education across the world.... by hosting and stimulating debates and discusssions, articles and blogs, and being a repository
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- International Society for Bayesian Analysis (ISBA)
Promotes the development of Bayesian statistical theory and its application to problems in science, industry and government. News, history and minutes, archive of abstracts, information about the Reverend Thomas Bayes, and open positions in the field.
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- Intuitive Calculus
A site that teaches calculus "by forming an intuition" of concepts such as limits, derivatives, and integrals.
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- Invest Smart - David Leung, George Lee, and Andy Kim
Learn about the stock market and investment techniques. A Market Simulation lets classes, clubs, or individuals invest an imaginary $100,000 and track the results; includes a separate mutual funds simulation. Site also contains information about saving
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- Isabel's Math Blog - Isabel Catherine Lugo
A log of "interesting mathematics-related things" found on the web. The author studies mathematics at MIT, and since April of 2004 has used the blog to "... talk about interesting mathematics I come up with myself -- mostly toy problems, but I might even
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- James Poon Online Classroom - James Poon
Online instructional mathematics videos; a discussion forum; and articles on study skills.
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- JustMaths - Seager, Christian; Khawaja, Faisal; Muldowney, Melanie
Video tutorials, practice exam questions, and other intervention resources created by three teachers practicing in the UK Midlands. Free resources include "trumps" and exam questions in algebra, data handling, geometry and measure, number, and more. Blog
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