6.NS.6a:
The Number System
Apply And Extend Previous Understandings Of Numbers To The System Of Rational Numbers.
Recognize opposite signs of numbers as indicating locations on opposite sides of 0 on the number line; recognize that the opposite of the opposite of a number is the number itself, e.g., -(-3) = 3, and that 0 is its own opposite.
6.NS.7a:
The Number System
Apply And Extend Previous Understandings Of Numbers To The System Of Rational Numbers.
Interpret statements of inequality as statements about the relative position of two numbers on a number line diagram. For example, interpret -3 > -7 as a statement that -3 is located to the right of -7 on a number line oriented from left to right.