Why is it that I always feel the best after classes that I’ve planned the least? Is it because less-planned classes can be more organic, following discussions more naturally, accepting tangents? Or is it because I end up talking more in classes less planned, and don’t have to wait around bored while students practice with problems I’ve prepared? Clearly, some theories are more complimentary than others.
Of course, when I work for eight hours on 100 minutes of a lesson, I feel great about it. When I do a TON of work, my lessons are satisfying at reasonable rates. But there seems to be a sort of uncanny valley that starts at about one hour of prep and doesn’t end until about four hours. More of an uncanny crevasse.

fun vs. prep time
My work between one and two hours goes towards tiering the lesson, or differentiating an activity. I can invent or find an activity in this time, but it’s not enough time to make sure it’s great. I spend this time improving the lesson at the cost of its flexibility. Since the flexibility was the only thing making the lesson fun, and I haven’t replaced it with anything else that’s fun, I fall into the fun abyss. After 3 hours I’ve started adding something else that’s fun – an intrinsically engaging activity or demonstration – and start clawing my way out.
Here’s the worst part: I currently spend between two and three hours preparing my classes. Previously in my career, I was hitting the easy sweet spot, at between 45 and 75 minutes. Now I’m aiming at a harder (higher?) goal – fun and satisfaction, with big doses of student practice, understanding, and interest.
So, am I improving? The same valley exists neither in the graph of educational content vs. prep time nor in test scores vs. prep time. On some levels I’m more satisfied with my two- and three-hour lessons, even though they’re less fun. However, student interest is correlated to the amount of fun I’m having. And, dangit, so is how much I like teaching! Will my kids this year have higher skill levels, but like math less?
Sam Shah
December 2, 2009 at 8:24 pm
You had me at your first line. (This post resonated with me more than anything else I’ve read recently.)
Sue VanHattum
December 8, 2009 at 12:05 pm
The two-edged sword of being able to wing it well…
I have gotten by way too often with almost no prep. It makes it hard for me to imagine putting in the amounts of time people like Dan and Kate do.
I like to plan out my semester ahead of time, and have lots of cool stuff up my sleeve, so that my day-to-day planning isn’t so tough.
I agree that being able to ‘go with the flow’ can really make a class feel more alive.
Riley Lark
December 8, 2009 at 3:44 pm
But when I JUST go with the flow, I don’t have good, scaffolded practice problems ready. I can talk about some fun game but I haven’t made the cards yet. You know?
So far this year my theory has been, “Ok, I’ll spend 2-3 hours making my powerpoints etc. My classes this year won’t be great. But NEXT year I’ll spend another 2-3 hours, ALREADY HAVING THE POWERPOINTS READY(!!!), and then I’ll be at that sweet 4-hour zone for EVERY CLASSSSS!!!” Of course, I already want to cut one unit I made this year and rearrange the order of like every single class. Ef.
Jinna
December 14, 2009 at 1:43 am
This is exactly it! I actually think I’m in an uncanny valley in terms of teaching YEARS too. I hit the sweet spot of teaching my first few years and now that I know more, I think I really suck more in trying to attain that other end of the valley! Higher expectations, trying to juggle too many goals, and the ability to see more of why they don’t understand has been making my 6th year harder than I ever imagined.
(Hi btw. I saw you referenced off of Kate Nowak’s site.)
Riley Lark
December 14, 2009 at 11:16 am
Thanks for reading, and good luck with your valley. It’s exhausting, right?
How to Teach Respect « Point of Inflection
April 29, 2010 at 8:52 pm
[...] When you do give a stupid assignment or are unprepared for a lesson plan (not that I've ever been unprepared!) just apologize for [...]