Rich Tasks

3 Act Tasks
3-Act Lessons at Questioning My Metacognition
https://gfletchy.com/3-act-lessons/

3 Act Math at When Math Happens
https://whenmathhappens.com/3-act-math/

Other Tasks
6 Characteristics Of Rich Math Tasks
https://blog.heinemann.com/6-characteristics-rich-math-tasks

Rich Math Tasks
http://www.sfusdmath.org/rich-math-tasks.html

Rich Mathematical Tasks
https://www.doe.virginia.gov/testing/sol/standards_docs/mathematics/2016/rich/index.shtml

Corwin Rich Math Tasks
https://us.corwin.com/en-us/nam/rich-math-tasks

Youcubed Tasks
https://www.youcubed.org/tasks/

Rich Tasks and Productive Struggle: Effective Teaching with Principles to Action Institute, 2015
https://www.nctm.org/uploadedFiles/Conferences_and_Professional_Development/Institues/Pre-K_Grade_12_Common_Core_Series/Beth_presentations.pdf