September 13 2017

# Welcome to Math!

• Signed 1.1 Quiz
• Comparing Integers sheet
• Unit 1 packet
• pencil
• Chromebook

### Warm-Up:

Preview Vocab: absolute value, credit, savings, balance, account, debt

### Lesson: 1.3 Absolute Value

Learning Target: Students will be able to demonstrate how to find and use an absolute value.

### Engage:

Have you ever borrowed money from a friend? How can you mathematically describe owing money?

Login on my.hrw.com and go to the Interactive Student Edition (first yellow book) –> Module 1 –> 1.3 Absolute Value

### Explore:

• Explore Activity 1, p. 19
• You can use absolute value to describe or compare real-life distances such as how far you ride a bike, dive under water, or ascend in a Ferris wheel.
• Explore Activity 2, p. 21-top of 22
• Remember: negative amounts represent points that the person needs in order to stay in the game.
• How can you tell which player needs the most points?
• If a player needs 50 points and has a change of -30 in his or her point total, how do you find the number of points the player needs?
• If a player’s point total decreases, what happens to the number of points the player needs to stay in the game?

### Explain:

• Absolute Value in a Real-World Situation: Example 1, p. 20
• How would you define a balance on a gift card?
• How would you explain what a balance of \$0.00 on a gift card means?
• How can you use absolute value to show the amount Jake has left on his gift card?
• Your Turn, top of p. 21 (4-10)
• Distance is always ____.
• What can you say about the distance of numbers -55 and 55 from 0?

### Elaborate:

• Summarize: How do you use absolute value to compare two negative numbers, such as fees, or amounts owed on a credit card or other kind of loan?
• Guided Practice, p. 22.
• Remember, a credit is a payment that decreases the balance owed, while a fee is like a purchase that increases the balance.

### Homework:

1. Do p. 22-24 (odds).

(Switch name cards for next class.)

# See you tomorrow!

Posted September 13, 2017 by missnichols in category Math, Miss Nichols' posts