Finding your movie seat means naming the row and then the seat number; give a direction and a distance, and a single point is pinned down.
Module goal. Stretch the number line and intervals from last stage out into the plane, and learn how a single pair of numbers can lock down any spot on a flat surface
eastmath.com · 20.1 Pinpointing a Point with Coordinates · 20.1.1 How We Describe Where Something Is