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* *Reflection: Real World Applications
Adding and Subtracting Integers - Real World Applications - Section 2: Explore

The activity went well, the kids liked it - but the question I answered the most as I shuffled around the room was "is it subtraction or plus a negative?" I had a very difficult time getting students to realize that those are the EXACT same thing...even though we have spent several class periods on it. What I ended up doing, which seemed to work well, was have kids use a red crayon/pen/marker to underline any words that implied something negative. Then, when they went to write the equation, they could only make one negative per red line. By doing that, students finally started seeing that you can't just throw subtraction in there, and make a number negative. The other issue I came across was questions that asked for kids to find the change or difference - students struggled to place the highest number first in the equation, which led to the answer. Detail was key - mathematical practice 6 really played a part in student success with this activity.

*Real World Applications: Common Misconceptions Reflection*

# Adding and Subtracting Integers - Real World Applications

Lesson 11 of 23

## Objective: Students will be able to identify and apply the correct procedures for solving addition and subtraction integer problems.

#### 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 targets are, “I identify and execute the correct procedure for solving integer addition and subtraction problems.” 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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#### Explore

*50 min*

**Color By Number:** Today students will work on a color by answer activity that I have created. Most students enjoy the opportunity to color, and in this activity students will uncover a hidden picture as they color their answers the appropriate hues. The Adding and Subtracting Word Problems Color Questions in the activity require that students make sense of problems and show work in different ways - drawing pictures, writing expressions **(mathematical practices 1 and 2). **Additionally, students will use mathematical expressions to model real world scenarios (**mathematical practice 4**).

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#### Summarize

*2 min*

**Exit Problems:** To summarize this lesson, I am going to have students complete 4 exit problems on the back of their opener. The purpose of the problems will be for me to get one final sense of who still needs interventions before the upcoming test. In the next lesson students will be engaged in a group activity, and I want to make sure give students all the help that they need. See video!

#### Resources

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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: Integers and Absolute Value - Are two steps forward and two steps back the same thing?
- LESSON 2: Modeling Addition - Opposites Attract, You Know?!
- LESSON 3: Integer Addition Word Problems - Can You Picture It? (Two Day Lesson)
- LESSON 4: Adding Integers - What's the Rule?
- LESSON 5: Multiple Addends - More than 2 numbers to add?
- LESSON 6: Adding Integers Review
- LESSON 7: Adding Integers Test
- LESSON 8: Subtracting Integers - How does subtraction relate to addition?
- LESSON 9: Subtracting Integers Practice - Can you subtract more than two integers?
- LESSON 10: Addition and Subtraction of Integers - DOMINOES!
- LESSON 11: Adding and Subtracting Integers - Real World Applications
- LESSON 12: Adding and Subtracting Integers - REVIEW!
- LESSON 13: Adding and Subtracting Integers Test
- LESSON 14: Adding and Subtracting Signed Fractions - Remember Those Integer Rules!
- LESSON 15: Adding and Subtracting Signed Fractions Fluency Practice
- LESSON 16: Adding and Subtracting Signed Decimals - Line Up Those Points!
- LESSON 17: Adding and Subtracting Rational Numbers - Practice Makes Perfect!
- LESSON 18: Adding and Subtracting Rational Numbers - Test
- LESSON 19: Multiplying and Dividing Integers
- LESSON 20: Multiplying and Dividing Rational Numbers
- LESSON 21: Problem Solving with Rational Numbers
- LESSON 22: Fractions to Decimals - Terminate or Repeat?
- LESSON 23: Rational Number Unit Test