The most-mentioned books on r/matheducation.

Elementary and Middle School Mathematics

4 users

Knowing and Teaching Elementary Mathematics Teachers' Understanding...

4 users

How to Solve It

4 users

The Number Devil

4 users

What's Math Got to Do with It?

3 users

Thinking Mathematically

3 users

How to Prove It

3 users

Algebra

3 users

Motivation Counts

3 users

Looking for more? Similar subreddits are bioinformatics, MachineLearning, math, mathematics, and rstats.