6.NS.7c Absolute Value

TEACHER:Jennifer Mraz / SUBJECT: 6th Grade Math
STANDARD:
6.NS.7c Understand the absolute value of a rational number as its distance from 0 on the number line; interpret absolute value as magnitude for a positive or negative quantity in a real-world situation.
STUDENT TARGET:
Identify the absolute value of a number.
Interpret absolute value of a real world situation.
EVIDENCE OF MASTERY (MEASURABLE):
SUB-OBJECTIVES, SWBAT
Identify the absolute value of a number.
Interpret absolute value of a real world situation.
KEY VOCABULARY:
rational numbers, absolute value, positive, negative / MATERIALS:
famous people powerpoint
age estimation chart
ENGAGE (MAKE CONTENT AND LEARNING RELEVANT TO REAL LIFE AND CONNECT TO STUDENT INTEREST)
How is absolute value like guessing a person’s age?
BEFORE / TEACHER WILL:
Review positive and negative numbers with the class. Ask students what they know about positive and negative numbers. / STUDENT WILL:
Discuss positive and negative numbers and where they are located on a number line. Negative numbers are to the left of zero and negative numbers are to the right of zero.
CO-TEACHING STRATEGY IF APPLICABLE
DURING / TEACHER WILL
  1. Play a game of Guess My Age. The winner will be the person with the total estimated ages closest to the total actual ages.
  2. Help the class determine the winner.
  3. Lead a discussion of the results of the game by having the class answer reflection questions 1 and 2.
  1. Write =5 on the board. Say the absolute value of 5 is 5.
  2. Draw a number line from -10 to 10. Use the number line to show students that 5 is five places from zero on the number line.
  3. Write =5 on the board. Say the absolute value of negative 5 is 5.
  4. Show students that -5 is five places away from zero on the number line.
  5. Ask students to tell their neighbor the absolute value of 5 and the absolute value of negative 5.
  6. Ask students to answer discussion questions 3. Help students discover that absolute value can be like guessing someone’s age. Guessing over the actual age or under their age is a positive number (the difference from the guess and the person’s actual age). Much like absolute value is the distance to and from zero on a number line. Make sure students understand that you can never have a negative guess and absolute value can never be a negative number.
/ STUDENT WILL:
  1. Play a game of Guess My Age.
  2. Determine and discuss the winner.
  1. Answer reflection questions 1 and 2. Discuss answers.
  1. Tell your neighbor the absolute value of 5 and negative 5.
  1. Answer discussion question 3 and be ready to share with the class.

CO-TEACHING STRATEGY IF APPLICABLE
AFTER / TEACHER WILL:
Ask students to write a paragraph describing how absolute value can be like guessing someone’s age. / STUDENT WILL:
Students will discover that guessing age is like absolute value. A guess can be either over or under the person’s actual age but is still a positive number (the distance from the person’s actual age). Just like absolute values are always a positive number (counting the distance from zero on a number line).
CO-TEACHING STRATEGY IF APPLICABLE