How the 10 Worst Face Mask in Classroom Fails of All Time Could Have Been Prevented

https://gumroad.com/neisnefnrg/p/the-worst-videos-of-all-time-about-disinfection-classrooms

This is a fascinating piece that I've written, where I talk what are covid-19 classroom rules for pupils? Among the things which I was really struck by, was the remark that I made after reading this guide, where