##
* *Reflection: Lesson Planning
Words and Abstractions - Section 1: Opener: Complete the other number trick, with symbols and algebra

I am a tireless tinkerer. I can never quite "leave well-enough alone" with any lesson plan. My decisions about precisely what to teach are always based on the real students I have in class and the practical concerns of what's going on in school. I make changes to my lessons based on experiences from last year, not just with a lesson itself, but also where it contributed to getting us by the end of the year.

Capturing all of it to share with you, here, is difficult. As a teacher, I hope you can relate! If you've ever tried to describe your days to someone else, and just felt like they're not quite getting the full scope of everything you do, then you know what I'm talking about. Even from teacher to teacher, how can we possibly share *every* idea we have? That's why I'm going to be as open with you here as I can possibly find the time to be. I hope that it's helpful, and I hope that some of these reflections help to start their own round of conversations.

To summarize as briefly as possible, I should let you know that I added a lesson in between the previous one and the one you're reading now. I was able to gain access to the computer lab immediately this year, while last year I didn't get the kids to the lab until the second week of November. Here's my first computer-based lesson from a year ago, with an introduction to Delta Math; this year, some of that getting started stuff happened today.

Today was the fourth day of school, and we got into the computer lab. I was able to administer this survey (please feel to take a look, and fill it in with nonsense in order to see all three pages) and to get kids up and running on Delta Math. The assignment was brief: just some practice translating from words to algebraic expressions and some multiplication drills. That work with algebraic expressions serves as background knowledge for getting into the Number Trick Project and SLT 1.1, and now we've established this tool and classroom structure two months earlier than last year. I'm excited to see where we're going.

Of course, one change always leads to another, so let me share one more little tweak that has me pretty psyched for class tomorrow. Using the data from the survey, I'm giving the kids a temporary seating arrangement based on their answers to the prompt: "On a scale of 1 to 10, how much do you love math?" I made homogenous groups and as I distribute class folders tomorrow, I'll give kids a few minutes to discuss why they answered the question like they did, and then they'll share out. Then we'll see where it goes. On the seating chart slide, I used all the crazy nicknames kids provided for themselves.

That's why I love this job: I find it so engaging and exciting to figure out what works, by tinkering year after year.

*Tireless Tinkering*

*Lesson Planning: Tireless Tinkering*

# Words and Abstractions

Lesson 4 of 12

## Objective: SWBAT translate mathematical phrases into symbolic and algebraic representations.

At the end of our last class, and for homework, students commenced their work on translating number tricks from words into symbolic and algebraic representations. For today's opener, I post the second example (see the bottom of this page: Two Example Number Tricks) number trick from our previous class and instruct students to translate it into symbols and algebraic expressions.

As students get to work, I encourage them to look at their prior notes, and if they have room, to record this example on the same notebook page as the previous one. I also encourage them to help each other. Given between 5 and 10 minutes and plenty of firm goading, everyone should be able to get this done.

To see more about what this looks like, see my previous lesson: *How Can an Abstraction Show Me How Things Work? *There is also more to come on this project over the next few lessons.

#### Resources

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At the start of each week, I give students a weekly homework sheet that looks like this: HW Week 2. On the front is a checklist that they can use to make sure that they get everything done each week. As you explore this Algebra 1 course, you'll see that I've shared a variety of weekly homework sheets. On this one is a list of assignments to be completed, as well as a few little tidbits, like talking to an elder about algebra and noting where they keep their textbooks. I try to show the interactivity of these weekly sheets as a way of getting students to buy into these sheets as a useful tool.

On the back (I always use double-side copies) is a **Record Sheet**. This is place where students can jot some notes about what they learn, notice, or wonder about each day. When I introduce this side of the page, I remind everyone that expect them to "work hard, gather evidence, and demonstrate mastery." The record sheet is a place where they can take notes about how they're doing each of those things. As the year progresses, we will dedicated more and more of our attention to these record sheets, for now, I offer it as a tool but without a great deal of pressure or fanfare; I'd like to see what my students make of these on their own.

#### Resources

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#### Words and Abstractions #1

*30 min*

On the weekly homework sheet, I point out that tonight's homework is to finish an assignment called "Words and Abstractions 1". I say that we're going to get started right away, and that "I hope many of you will have a lot of this assignment complete before you leave class today."

We've already started translating number tricks into symbols and algebraic representations, but many students now need some practice. Many kids buy the idea of abstract representations of verbal phrases, but they lack the confidence or the experience to do it on their own. So today we'll build that.

Additionally, on Part 1 of the Number Trick Project, we left off with a challenge: *How can we represent subtraction if there are not yet any dots from which to subtract? *This assignment will give us a chance to develop an answer to this question as a group.

**Here is how I implement it:**

After distributing the handout to all students, I project the document on the screen at the front of the room. From there, I can provide a few examples for students, but I don't provide too many at first. Usually, this is enough to get everyone started: Words and Abstractions Examples. This is the sort of work that kids must grapple with and figure out on their own.

As class goes on, I might invite students to add their answer to what's on the screen.

The key thing we have to get to is what subtraction looks like. I point out that problem #11 on this handout is the same as the troublesome subtraction step on Part 1 of the project. I propose that we need three symbols: the box for a number that's already been established, the dot that represents 1, and something else for -1. A bunch of random shapes are offered, but the key is that it needs to have a relationship to the 1 dot. An empty dot might work, but I try to avoid that, because it may lead to confusion once we start talking about inequalities. Rather, I move toward the crossed-out dot. My notes look like this: Words and Abstractions Subtraction.

After that, it's pretty much on students to figure out as much as they can. I encourage them to discuss these problems with each other, and I say that tomorrow they'll see the answer key. I tell them that if they can take any approach they'd like: if they want to go one problem at a time, that's great, but if they want to complete the entire algebra or symbols column first, that's fine too. The problems on the front of the handout are expressions with one arithmetic operation, while on the back there are expressions with two or more operations. I tell students that it's ok if the back feels a little more difficult, and I repeat again that I'd like them to compare and discuss their answers with each other.

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While students work on Words and Abstractions #1, I try to check in with each of them individually. I make sure that I know each student's name, I keep a record of whether or not they have a binder and a signed syllabus, and I ask them how their doing on both today's work and on Part 1 of the Number Trick Project.

If I move pretty quickly, I can get a moment or two of face time with every student during today's half-hour of work time. This may be at the expense of giving a lot of extra help on today's handout, but it allows me to start to demonstrate another important class structure: the way I refer students to each other for help. If I get to the third table and I see that someone's having trouble with a problem that I've already seen someone else handling successfully, I might ask them to take a look at that problem together.

*expand content*

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- UNIT 1: Number Tricks, Patterns, and Abstractions
- UNIT 2: The Number Line Project
- UNIT 3: Solving Linear Equations
- UNIT 4: Creating Linear Equations
- UNIT 5: Statistics
- UNIT 6: Mini Unit: Patterns, Programs, and Math Without Words
- UNIT 7: Lines
- UNIT 8: Linear and Exponential Functions
- UNIT 9: Systems of Equations
- UNIT 10: Quadratic Functions
- UNIT 11: Functions and Modeling

- LESSON 1: Two Powerful Shapes
- LESSON 2: Number Tricks, Patterns, and How to Succeed in This Class
- LESSON 3: How Can an Abstraction Show Me How Things Work?
- LESSON 4: Words and Abstractions
- LESSON 5: Patterns and Abstractions
- LESSON 6: How to Write a Pattern Rule
- LESSON 7: How to Write a Number Trick
- LESSON 8: Work Period: Patterns and The Number Trick Project
- LESSON 9: Patterns Quiz and Project Work Time
- LESSON 10: What's Wrong With PEMDAS?
- LESSON 11: Problem Set: Number Lines
- LESSON 12: The Parentheses Challenge