For reasons I won't go into, I'm teaching one geometry class this year. I've never really enjoyed geometry, but that's neither here nor there--I'm credentialed to teach it, the powers that be need me to teach the course, QED.
What bothers me, though, is that I'll spend a year teaching this course out of our old textbook, and next year we'll switch to a new textbook. And yes, there are legitimate reasons why I cannot pilot one of the new textbooks this year.
So I'll work and create lesson plans this year, lesson plans that I'll never be able to use again because we're getting new textbooks.
Why don't I just get lesson plans for others who have taught from this book? Because as near as I can determine, none of them has lesson plans. The closest I've come is a day-by-day listing of what sections of the book one teacher covered during a semester and what assignment was given--which isn't a bad start, I guess, and I'm glad to have it, but it's nowhere near as detailed as what I create for myself. And what I create for myself isn't near as detailed as a Madeleine Hunter lesson plan.
Sigh. They're obviously much more used to teaching the subject than I am.