Warm-Up Activity

Silently Work on the following Math Problems

Warm-Up Problems

1. 5 + (-5) =

2. -7 + 9 =

3. 14 + (-8) =

4. 4 + (-10) =

Warm-Up Problems: Answers

1. 5 + (-5) = 0

2. (-7) + 9 = 2

3. 14 + (-8) = 6

4. 4 + (-10) = -6

Any QUESTIONS?

• Share with your partner/group the methods you used to solve the warm-up problems.

Mini Quiz

1. 4 + (-9) =

2. -6 + 10 =

3. 5 + (-5) =

4. (-3) + (-8) =

5. 12 + (-7) =

Daily Concept:Adding Integers using

Addition Rules• Standards:

– (NS 2.3) Add positive and negative integers.– (NS 2.3) Add integers to solve problems arising in concrete

situations.

• Objective:– To add positive and negative integers using a number line,

absolute value, and addition rules.

• Brain Pop:– http://www.brainpop.com/math/numbersandoperators/addingand

subtractingintegers/zoom.weml

• Marco’s parents bought him a new video game for his birthday. The objective of this game is to find the hidden treasure before the pirates. For every treasure chest found Marco receives 10 points. If a pirate finds the treasure before Marco, he receives –15 points. This is what happened on Level #1: Marco found a chest, then the pirates found a chest, and finally Marco found 2 more chests. Write an addition problem to represent the events in this story. What was Marco’s score?

• Marco found a chest: 10 +

• The pirates found a chest:10 + (-15) +

• Marco finds two more chests:10 + (-15) + 10 + 10 =

• Marco’s score is 15 points!

Academic Vocabulary

• Absolute Value: A number’s distance from zero on the number line.– What is the absolute value of (-6) ?

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6

– What is the absolute value of (4) ? • Create your own number line.

Think-Pair-Share

• Each of you take turns explaining to your partner the idea of “Absolute Value”, and how you find it.

» (25 seconds each)

• Also discuss how you might use absolute value when adding integers.

» (25 seconds each)

Guided Practice

• Take notes in your journal:– Copy the steps– Copy the sample problems

Independent Practice

• Work on these problems silently and independently. If you are having difficulties use your journal as a resource.

1. 7 + (-3) =

2. -5 + (-7) =

3. 10 + (-8) + 9 =

4. -4 + 2 + (-3) + 5 =

Mini Quiz

1. What is the absolute value of (-6)?2. What is the absolute value of (8)?3. 16 + (-2) = 4. -8 + 3 + (-4) =5. A football team needs 15 yards to get a “first

down”. On the first play they gain 7 yards. On the next play they lose 10 yards. On the third play they gain 9 yards. How many yards did they get all together? Did they get the first down?

Mini Quiz: Answers

1. 6

2. 8

3. 14

4. -9

5. 6 yards No

Group Activities: Rules

• Work QUIETLY and COOPERATIVELY.

• PLEASE do not interrupt the teacher during small group instruction. I will be monitoring all groups and providing feedback.

• PLEASE do your best and respect the others around you.

• If you finish early review your journal.

Group Activities

• Group “A” work with the teacher.

• Group “B” complete the activities in

folder #1.

• Group “C” complete the activities in

folder #2.

Lesson Close

• TPS the important information you’ve learned or practiced during today’s class.

• Sample problem.

• Any further questions, comments, or concerns?

• Tomorrow’s homework is:

Page 180 (#42- #49)