##
* *Reflection: Trust and Respect
Add and subtract positive and negative numbers - Section 4: Homework

You might be wondering why I give answers to the HW - every problem, every night.

Won't kids just cheat and copy?

Well... I give the answers for several reasons:

1) It allows students to receive immediate feedback on whether or not they got the answer right to a problem - in the moment. When they have time to fix it. Not the next day during class, when there is no time to use that information.

Students are expected to try to figure out why their answers were wrong on their own first, and then call me or a friend to get help.

2) It reinforces the idea, that I have up on a poster in my room, that "more important than what the answer is is WHY the answer is." If the answer is already given, you realize that I care much less about the answer and much more about HOW and WHY that is the answer. It's a huge difference.

3) It offers an opportunity to build character. Sure, you can cheat... but who will gain?

Kids have always told me this has helped them enormously. Check out the text back and forth with one of my students in the resources section.

*Trust and Respect: Why I Give Answers On the HW*

# Add and subtract positive and negative numbers

Lesson 2 of 9

## Objective: SWBAT add and subtract positive and negative numbers.

## Big Idea: Good guys and bad guys? Use Spiderman and Venom (and Street Fighter 2) to illustrate the idea of adding and subtracting positive and negative numbers.

*75 minutes*

#### Warm-up

*10 min*

Each day, students complete a warm-up that usually consists of spiraling the previous day's material, in addition to older material. Warm-up problems also sometimes extend lessons that students have encountered before to more unfamiliar contexts.

*expand content*

#### Homework

*15 min*

The homework includes questions related to this lesson, as well as spiraled review. I also provide answers to the problems on page 2.

*expand content*

*Responding to Joyce Stokes*

Joyce - apologies for the delay in my response! Do you have SMART Notebook software? If not, it is essentially the same content as the Word document. Hope this is helpful!

| one year ago | Reply

Hi Jeff,

I'm not able to open your presentations. Can you help?

| one year ago | Reply*expand comments*

##### Similar Lessons

###### Adding and Subtracting Integers on a Number Line

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- UNIT 1: FLUENCIES AND THE LANGUAGE OF ALGEBRA
- UNIT 2: SOLVING LINEAR EQUATIONS
- UNIT 3: INTRODUCTION TO FUNCTIONS
- UNIT 4: INTERPRETING AND COMPARING LINEAR FUNCTIONS
- UNIT 5: SYSTEMS OF LINEAR EQUATIONS
- UNIT 6: EXPONENTS AND SCIENTIFIC NOTATION
- UNIT 7: PARALLEL LINES, TRANSVERSALS, AND TRIANGLES
- UNIT 8: CONGRUENCE AND SIMILARITY THROUGH TRANSFORMATIONS
- UNIT 9: PATTERNS OF ASSOCIATION IN BIVARIATE DATA
- UNIT 10: SLOPE REVISITED
- UNIT 11: VOLUME OF CYLINDERS, CONES, AND SPHERES
- UNIT 12: POLYNOMIALS AND FACTORING
- UNIT 13: QUADRATIC FUNCTIONS

- LESSON 1: Day One
- LESSON 2: Add and subtract positive and negative numbers
- LESSON 3: Multiply and divide positive and negative numbers
- LESSON 4: Develop fluency with positive and negative numbers
- LESSON 5: Add, subtract, and multiply decimals
- LESSON 6: Divide decimals
- LESSON 7: Evaluate expressions using substitution (Day 1 of 2)
- LESSON 8: Evaluate expressions using substitution (Day 2 of 2)
- LESSON 9: ASSESSMENT #1