Mystery Strategy
https://teachinghistory.org/teaching-materials/teaching-guides/24295
Mystery Strategy Planning
https://www.gagc.org/resources/Documents/2016%20Convention/mystery%20strategy%20planning%20-%20Scanned%20from%20the%20Strategic%20Teacher.pdf
https://teachinghistory.org/nhec-blog/24485
Example Lesson
https://www.fultonschools.org/cms/lib/GA50000114/Centricity/Domain/7557/TAG%20Lessons%20for%2010.5-10.9.pdf