Acknowledgments My favorite part of writing books is that I get to write an acknowledgments chapter. In both A Non-Freaked Out Guide to Teaching the Common Core and These 6 Things: How to Focus Your Teaching on What Matters Most By a teacher, for teachers.A free, twice-weekly newsletter. Used by 25k+ people to become better teachers.Subscribe.I'm a teacher, not a spammer. Unsubscribe any time.