Number+lines+and+coordinate+planes

= 6-NS6 = =Understand a rational number as a point on the number line.= =Extend number line diagrams and coordinate axes familiar from previous grade to represent points on the line and in the plane with negative number coordinates.=

a. Opposites [6-NS6a]
 * Recognize opposite signs of numbers as indicating locations on opposite sides of 1 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.

b. Signs [6-NS6b]
 * Understand signs of numbers in ordered pairs as indicating locations in quadrants of the coordinate plane
 * Recognize that when two ordered pairs differ only by signs, the locations of points are related by reflections across one or both axes

c. Find and position... [6-NS6c]
 * Find and position integers and other rational numbers on a horizontal or vertical number line diagram
 * Find and position pairs of integers and other rational numbers on a coordinate plane