2. Absolute Value NOTICE: The following presentation contains copyrighted materials used under the Multimedia Guidelines and Fair Use exemptions of U.S. Copyright law. Further use is prohibited. http://coolmath.com/prealgebra/08-signed-numbers-integers/images/04-signed-numbers-02.gif

3. I will use a number line to interpret absolute values of positive and negative numbers. Our objective is ______. To explain what something means.

4. Mathematics CCSS 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.

5. Absolute Value: Introduction http://coolmath.com/algebra/18-absolute-value-equations-inequalities/images/01-absolute-04.gif

6. Prior Knowledge You already know the opposite is a position on the other side of something. On a number line, the opposite of a number is the same distance from zero, but on the other side of the zero. Zero is it’s own opposite because it is neither negative nor positive. Example: ___ is the opposite of ____ because ______. I will use a number line to interpret absolute values of positive and negative numbers.

7. Concept The absolute value of a rational number is its distance from zero on the number line. – Absolute means definite – A value means what something is worth I will use a number line to interpret absolute values of positive and negative numbers. Any integer or fraction The absolute value of a rational number is ________________. 12 3 4 The absolute value of 4 is 4 because it is four units away from zero on the number line. 12 3 4 The absolute value of -4 is 4 because it is four units away from zero on the number line.

8. Concept I will use a number line to interpret absolute values of positive and negative numbers. Explain why 3 is 3. The absolute value of 3 is 3 because ____________________. The absolute value of a rational number is its distance from zero on the number line. The mathematical symbol for absolute value is two vertical lines on both sides of the rational number. When you see I3I on a math assignment, you are being asked to identify the absolute value of the number 3.

9. Check For Understanding:  Explain why 3 is 3. The absolute value of 3 is 3 because ____________________.

10. Concept Example: 5 The absolute value of ____ is ____ because ____. I will use a number line to interpret absolute values of positive and negative numbers. The absolute value of a rational number is its distance from zero on the number line.

11. Concept Example: -5 The absolute value of __ is __ because __. I will use a number line to interpret absolute values of positive and negative numbers. The absolute value of a rational number is its distance from zero on the number line.

12. Concept Non-Example: The absolute value of -1 is not -1 because ___. I will use a number line to interpret absolute values of positive and negative numbers. The absolute value of a rational number is its distance from zero on the number line.

13. Concept Non-Example: -4 The absolute value of 4 is not 3 because ___. I will use a number line to interpret absolute values of positive and negative numbers. The absolute value of a rational number is its distance from zero on the number line.

14. Skill – You Do 1.Plot the positive or negative number. 2.Identify the absolute value of the number. 3.Justify your reasoning. – I know that ____ is the absolute value of ____ because ___. -500 I will use a number line to interpret absolute values of positive and negative numbers. The absolute value of a rational number is its distance from zero on the number line.

15. Closure One of your classmates was absent today and will have no idea how to interpret the absolute value of -20 tomorrow. Please explain in writing how she can do this. To explain to Christine what the absolute value is -20 is, I would ____________. I will use a number line to interpret absolute values of positive and negative numbers. The absolute value of a rational number is its distance from zero on the number line.

16. Citations: Video: "Math Shorts Episode 10 - Absolute Value." YouTube. YouTube, 12 Mar. 2014. Web. 14 Feb. 2015.. Images: http://coolmath.com/algebra/18-absolute-value- equations-inequalities/images/01-absolute-04.gif