Every once in a while a lesson goes nothing like what was planned, and it turns out to be the best. thing. ever.

The lesson plan was simple:

- A 10 minute warm-up to review simplifying expressions (Students had just been tested on it, but many could still use more practice to continue to gain confidence with it.)
- About 15 minutes of notes and examples of solving equations with square roots
- 25 minutes of work time

That simple lesson plan turned into one of the best things that has ever happened in my classroom.

If you’re looking for some great, new, exciting warm-up, you’re looking in the wrong place. You won’t find it here. What you will find is how a basic, boring warm-up problem, changed my classroom, my students, and me as a teacher.

The warm-up for the day was **My Favorite No**. Students seemed a bit sluggish that day, so after picking “My Favorite No” and putting that incorrect solution on the board, I paired it with a couple Stand and Talks. (You can read about what that looks in my classroom **here**.)

After the Stand and Talks, I had more students willing to volunteer than prior to the Stand and Talks, but I was tired of having “more” students willing to participate. I wanted *all* students to participate.

What happened next was so completely unplanned. I wish I could say I was intentional about planning a lesson so that something like this would happen, but I didn’t. It was a complete accident. Sometimes I just *hate* that some of my best teaching moments are those spur of the moment things that just happen. It almost makes me want to try winging it all the time just to see what happens. Almost. 😉

I pointed out to students that they had just spent several minutes talking with two different people about mistakes in the problem, and that I heard them talking about the problem and knew that everyone should have something to say. As I was saying this, the teacher I team teach with, went around pulling the students’ hands in the air. Many of the students grinned sheepishly because they knew they were just choosing to not engage in what we were doing.

I called on a student and the response I got was, “I don’t know. She raised my hand.” (as he pointed to the teacher). I told the student I would come back to him. I wasn’t going to let him off the hook. We finished going over the mistakes in the problem. I went over to my computer, hit the undo button until the problem was back to how it was at the start with the mistakes still in it. I went back to the first student and asked again for a mistake in the problem. Again, the student still didn’t have an answer for me. Again, I told him I would come back to him. As we were going over the problem the second time, I called on another student who also did not know where a mistake in the problem was.

I think we went through that same problem 4 or 5 times. I hadn’t planned on that, but if a student didn’t have an answer or could name a mistake but couldn’t explain why it was a mistake they heard, “Ok, I’ll come back to you.” We did the problem until *every single student* in the class could explain a mistake in the problem to me. In that moment, I decided that participating and engaging in class was no longer an option for students.

Then I put another problem up on the board and told them to try it. We went over it on the board, and while the participation was higher than an average day, it still wasn’t where it should be.

I said, “Ok, now try this one.” As I said it, I still didn’t know if I was going to put the same problem up again, but I decided I wanted to drive my point home with students, so the same problem it was.

When we went over the problem the second time, nearly every student in the class was willing to raise their hand.

When I said, “Ok, now try this one.” I heard, “Oh no, not again!” 🙂 I put a problem similar to this up.

I walked around to see that every. single. one. of my students wrote the problem down on their paper, and most students had done at least the first step. This was HUGE. By this point in the lesson, I could feel that what was happening was special, and I was excited.

We hadn’t done any problems yet where the square root of *x* was being multiplied by anything. Some students got stuck with what to do once they added 8 to both sides of the equation, but I expected that to happen.

However, what my students were stuck on was not worthy of my attention at that point. I stopped the class and made a **big** deal out of the fact that every single student wrote down the problem. I asked them what they would have done a couple days ago if they had seen a problem like that where we hadn’t gone over anything like it before on the board? Many admitted they wouldn’t have even written it down, and a student in my other class said, “We would have been stuck on the escalator.” It couldn’t have been a more perfect response! (Scroll through **this** post from Sara Van Der Werf to read about the escalator and beagle video she shows her students. I highly recommend using them in your classroom!)

I let them know how proud I was of them for engaging in the problem and getting started with it even though it looked different than anything they had done before.

I put up a third problem on the board. When it was time to go over it together, I told the class to look around and asked, “When have we ever had this many people willing to answer?” They all responded with, “Never!” And then I asked, “And have we already gone through this problem together today?” Their response, “No!”

I could see in their faces that they were getting it. Not the math, but they were getting *it. *They were getting what I wanted them to see and know and believe about themselves as math students.

They may not admit it, but I could tell they felt good about themselves. I told them that this shows them that if they engage themselves and participate they can do it. In my other class we talked about how some of them walk into my room and because it’s a math class they feel they can’t be successful. However, I just showed them in less than 30 minutes that if they participate, they can do it.

I don’t know that I have ever been more nervous to teach a lesson than I was my second 8th grade class that day. My first class had gone SO well, and it was so un-planned. Part of what made it so great was that it just happened. I feared that I would try to force something with that second class, and it would flop.

By the end of that class, I had a student literally jumping out of her seat wanting to tell us what to do next in the problem. This was a student who never participated in class. ever.

I had goosebumps.

And *that* is how a simple, boring warm-up problem has had such an impact on me, my students, and my classroom.

Congratulations on a great spontaneous lesson. I love how you allowed students to say I don’t know, but you also held them accountable down the line. My Favorite No is a powerful tool for teaching that I’ve gone to probably 15 times already this year. I love incorporating it before we even start a subject as a pre-assessment and a “nothing to lose” attempt from the students is usually well received.

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