The RoboExploration activity mat (72"x48") can be used for many creative robot activities to learn concepts in math, coding, and science. It comes in two versions:
 
The version for Grades 2-5 has a coordinate system with the positive x-axis on the bottom and and positive y-axis on the left.

The version for Grades 6-12 has the same positive x-y axes on the bottom and left sides of the mat, but has an additional coordinate system with four quadrants (includes negative numbers).