I’ve been working most of today on the foundations of my Modern Algebra course for the fall, which you will remember is being done without a required textbook. The last time I posted about this course ...

Middle schoolers' access to the course is stratified along racial, socioeconomic, and regional lines, new research finds.

Modern Algebra Group theory - basic properties, permutation groups, finite Abelian groups, cosets, normal subgroups, homomorphism theorems, representation. Ring theory - integral domains and fields, ...

Thanks to the information revolution, a stunning 90% of the data created by humanity has been generated in just the past two years. Yet the math taught in U.S. schools hasn’t materially changed since ...