Missouri Learning Standards
MO.6.GM. Geometry and Measurement
6.GM.A. Solve problems involving area, surface area and volume.
6.GM.A.3. Solve problems by graphing points in all four quadrants of the Cartesian coordinate plane.
6.GM.A.3a. Understand signs of numbers in ordered pairs as indicating locations in quadrants of the Cartesian coordinate plane.
6.GM.A.3b. Recognize that when two ordered pairs differ only by signs, the locations of the points are related by reflections across one or both axes.