Coordinate Plane Drawing: Superman Teaches Math Superman Teaches Math Teaching kids to graph on a coordinate plane can be challenging. x, y, z? We used to say “x, y, z” if someone forgot to zip-up their fly after using the restroom when I was in school. I never did quite understand graphing until recently. This was a fun activity for the boys to practice plotting points on a graph. I found this activity at MathClass.net. Click on the site to go right to the page. How have you reinforced coordinate plane graphing?