This file includes all of the 77 Esti-Mysteries that I wrote prior to November 2020!  They are completely ready to use.  You can click on the next file in the course:  "77 Esti-Mysteries from Prior to November 2020" and you'll have all 77 of these Esti-Mysteries as well as some notes about the Esti-Mysteries.  I hope you enjoy using them in your classroom!