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r/matheducation rules, stats, and what to post

A source-backed Rankhog guide to r/matheducation: public rules, community context, posting fit, and startup-promotion risk before you publish.

By Anthony Riera, founder and operator of Rankhog.

Subreddit guides combine public Reddit source URLs, captured rules, visible verification dates, and Rankhog's account-safety workflow.

Current public stats

Members
42,796
Verified
September 18, 2026
Category
Science and research communities

Rules can change, so Rankhog keeps verification dates and the original public Reddit sources visible.

Rule summary

  • Homework or Math Help: r/matheducation is focused on mathematics pedagogy (the teaching of). Please avoid posts that related to homework or other "How do I solve this?" type questions.
  • Self Promotion: If you have created mathematical content that is thoughtful, focused and related to the teaching of mathematics that you want to share with the community, you may do so only on Saturdays (PST). Self-promoting posts on all other days or not on topic with the sub will be removed.
  • Not related to math teaching: Most of us already know how the basic mathematical concepts we teach work. That's why we're teachers of mathematics. A post about a specific mathematical concept isn't sufficient to stay up. However, a post about different ways to communicate common ideas could fit. The key is: if my resource is aimed only at students of mathematics, it's not an appropriate post. If it's aimed at teachers of mathematics, then it fits!

Works well

  • A post about a specific method for explaining fractions or long division to students who struggle with the concept.
  • A discussion of how to assess student understanding of algebra without relying on timed tests.
  • On a Saturday, a link to a free resource for math teachers that explains a new framework for teaching geometry.
  • A question to math teachers about how they handle the transition from arithmetic to algebraic thinking in their classrooms.

Avoid

  • Do not post homework questions or ask how to solve a specific math problem.
  • Do not share your own content on any day other than Saturday.
  • Do not post content aimed only at students of mathematics rather than teachers.
  • Do not assume a post about a mathematical concept alone will stay up without a teaching or pedagogy angle.

What r/matheducation Is For

This community is for discussions of math teaching and pedagogy. The people who post here are teachers of mathematics, and the focus is on how to teach math, not on math itself. If you are a founder or marketer, the room is full of educators who care about methods, communication, and the craft of teaching.

Rules That Matter Before Posting

The rule called "Homework or Math Help" tells you the community is only for pedagogy, not for solving problems. The rule called "Self Promotion" is the one that controls marketing: you may share your own mathematical content only on Saturdays in Pacific time, and it must be thoughtful, focused, and related to teaching mathematics. The rule called "Not related to math teaching" adds a second filter, because a post about a math concept alone is not enough, it has to be aimed at teachers, not students.

What To Post

A good post here is aimed at teachers of mathematics and deals with how to teach. You could write about different ways to communicate a common mathematical idea, a pedagogical approach, or a classroom strategy. If you are sharing your own content, wait until Saturday in Pacific time, and make sure it is thoughtful, focused, and tied to the teaching of mathematics.

What To Avoid

Do not post homework questions or ask how to solve a specific math problem. Do not post your own content on any day other than Saturday. Do not post content aimed only at students of mathematics, because the community is for teachers. Do not assume that a post about a mathematical concept alone will stay up, because the moderators will remove it if it lacks a teaching or pedagogy angle.

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Common questions about r/matheducation

Can I share my math education product or content here?

Only on Saturdays, and only if it is thoughtful, focused, and related to teaching mathematics.

Can I post content aimed at math students?

No. The community is for teachers of mathematics and discussions of pedagogy, not for student-facing resources.

Can I ask for help with a math problem?

No. The rules ask you to avoid posts related to homework or how do I solve this type questions.

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