About the Mathematical Association of America community
Mathematical Association of America is an online community for Math. It uses a forum format for communication.
In their own words
The Mathematical Association of America is the world’s largest community of mathematicians, students, and enthusiasts. We further the understanding of our world through mathematics because mathematics drives society and shapes our lives.
r/mathThis subreddit is for discussion of mathematical links and questions.
r/learnmathPost all of your math-learning resources here. Questions, no matter how basic, will be answered (to the best ability of the online subscribers).
MathOverflowMathOverflow is a question and answer site for professional mathematicians. Anybody can ask a question. Anybody can answer. The best answers are voted up and rise to the top.
Art of Problem SolvingArt of Problem Solving creates educational materials for motivated students in grades 2–12. The company's books, classes, and online resources help students become creative, successful problem solvers. The website contains a community forum that is available to all that have math questions.
r/matheducationMath education! r/matheducation is focused on mathematics pedagogy (the teaching of). Please avoid posts that are related to homework or other "How do I solve this?" type questions. There should be an emphasis on usefulness (such as good internet resources or ideas for how to teach a concept).