A review by treyhunner
Teach Like a Champion 2.0: 62 Techniques That Put Students on the Path to College by Doug Lemov

This was mostly applicable to teaching a group of young students in-person over the course of many months.

I did glean some ideas which may be useful for for my in-person trainings and some ideas which may be useful in an online teaching setting.

If I found myself teaching K-12 I would probably reread this book.