1. Absolute Value I can understand and order absolute value of rational numbers.

2. Vocabulary  Absolute Value:  The distance from zero on the number line, the absolute value of -5 is 5 because -5 is 5 units away from zero, l-5l = 5.  Rational Number:  A number that can be expressed as a fraction or ratio of integers.  Inequality:  A statement that one quantity is less than or greater than another. The symbols,, ≠ are used.  Number Line:  A line on which equally spaced points are marked. The points correspond, in order, to the numbers shown.  Absolute Value:  The distance from zero on the number line, the absolute value of -5 is 5 because -5 is 5 units away from zero, l-5l = 5.  Rational Number:  A number that can be expressed as a fraction or ratio of integers.  Inequality:  A statement that one quantity is less than or greater than another. The symbols,, ≠ are used.  Number Line:  A line on which equally spaced points are marked. The points correspond, in order, to the numbers shown.

3. Vocabulary Continued  Greater Than:  A relation between a pair of numbers showing which is greater.  Less Than:  A relation between pairs of numbers showing which is less.  Negative Quantity:  A quantity that is less than zero. These numbers are written with a negative sign (-) in front of them.  Positive Quantity:  Numbers greater than zero.  Greater Than:  A relation between a pair of numbers showing which is greater.  Less Than:  A relation between pairs of numbers showing which is less.  Negative Quantity:  A quantity that is less than zero. These numbers are written with a negative sign (-) in front of them.  Positive Quantity:  Numbers greater than zero.

4. Identifying Absolute Value in an algebraic problem  How to tell if a question is asking for an absolute value  |7|  See those lines around the 7?  How to tell if a question is asking for an absolute value  |7|  See those lines around the 7?

5. Why Do We Care?  Absolute values are necessary to complete real life situations.  Distance  Driving  Exchange currency in a different country  Building  Absolute values are necessary to complete real life situations.  Distance  Driving  Exchange currency in a different country  Building

6. Let’s Practice  |4|  |-3|  |-12|  12- |-3|  |-12| + |4|  |4|  |-3|  |-12|  12- |-3|  |-12| + |4|

7. Let’s Talk Technology  When typing math as text, such as in an e-mail, the "pipe" character is usually used to indicate absolute values. The "pipe" is probably a shift-key (meaning you must hit shift!) above the "Enter" key on your keyboard. While the "pipe" denoted on the physical keyboard key may look like a "broken" line, the typed character should display on your screen as a solid vertical bar. If you cannot locate a "pipe" character, you can use the "abs()" notation instead, so that "the absolute value of negative 3" would be typed as "abs(–3)".  Abs(-3) is how it will often look in a calculator.  When typing math as text, such as in an e-mail, the "pipe" character is usually used to indicate absolute values. The "pipe" is probably a shift-key (meaning you must hit shift!) above the "Enter" key on your keyboard. While the "pipe" denoted on the physical keyboard key may look like a "broken" line, the typed character should display on your screen as a solid vertical bar. If you cannot locate a "pipe" character, you can use the "abs()" notation instead, so that "the absolute value of negative 3" would be typed as "abs(–3)".  Abs(-3) is how it will often look in a calculator.