##
* *Reflection: Adjustments to Practice
Add and Subtract Linear Expressions Fluency - Section 3: Summarize

The next lesson coming up was to be applying expressions to perimeter and area. However, I went ahead and put some questions on that in this lesson, and in my summary question in an effort to assess whether the lesson was neccessary. During the lesson, I did not have to explain either the perimeter or the area problem - students were correctly solving and helping one another. Additionally, I only had 12 students in my 110 that could not correctly answer the summary question. Thus, I am not going to spend my next lesson covering area and perimeter applications - I will touch on it instead during the equation unit, where they will actually be able to solve for the variable.

*Summary Reflection*

*Adjustments to Practice: Summary Reflection*

# Add and Subtract Linear Expressions Fluency

Lesson 6 of 10

## Objective: Students will be able to add and subtract linear expressions.

## Big Idea: Practice makes perfect! This lesson gives students an opportunity to practice their skills with adding and subtracting linear expressions.

*65 minutes*

#### Launch

*10 min*

**Opener: **As students enter the room, they will immediately pick up and begin working on the opener. Please see my instructional strategy clip for how openers work in my classroom Instructional Strategy - Process for Openers. This method of working and going over the opener lends itself to allow students to construct viable arguments and critique the reasoning of others, which is **mathematical practice 3**.

**Learning Target: **After completion of the opener, I will address the day’s learning targets to the students. In today’s lesson, the intended target is, “I can add and subtract linear expressions.” Students will jot the learning target down in their agendas (our version of a student planner, there is a place to write the learning target for every day).

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#### Summarize

*5 min*

**Exit Problem: **To summarize this lesson, I am going to have students complete one problem that applies linear expressions to perimeter (modeling, **MP 4**), and requires students to add and subtract linear expressions. Students will work the problem out on the back of their opener, and will turn them in on their way out of the classroom.

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- UNIT 1: Introduction to Mathematical Practices
- UNIT 2: Proportional Reasoning
- UNIT 3: Percents
- UNIT 4: Operations with Rational Numbers
- UNIT 5: Expressions
- UNIT 6: Equations
- UNIT 7: Geometric Figures
- UNIT 8: Geometric Measurement
- UNIT 9: Probability
- UNIT 10: Statistics
- UNIT 11: Culminating Unit: End of Grade Review

- LESSON 1: Simplifying Expressions - What are like terms?
- LESSON 2: Simplifying Expressions - Fluency Practice
- LESSON 3: Distributive Property
- LESSON 4: Distributive Property - Practice Makes Perfect!
- LESSON 5: Add and Subtract Linear Expressions
- LESSON 6: Add and Subtract Linear Expressions Fluency
- LESSON 7: Expressions Applications - Can you apply expressions to area and perimeter?
- LESSON 8: Factoring Linear Expressions - Can you "un" distribute?
- LESSON 9: Expressions Review
- LESSON 10: Expressions Test - What have you learned?