In 2018, the MAA published a 148-page Instructional Practices Guide.
The Instructional Practices Guide aims to share effective, evidence-based practices instructors can use to facilitate meaningful learning for students of mathematics. I take the primary audience to be college instructors, but there is good information here for all math teachers.
It is designed as a “how to” guide focused on mathematics instruction at the undergraduate level. It is based on the concept that effective teaching is supported by three foundational types of practices: classroom practices, assessment practices, and course design practices all informed by empirical research as well as the literature on technology and equity. They also have a section on Cross-cutting Themes (including technology and equity).
The guide can be downloaded here.