This activity is open and gives space for students to learn about representing in a graph with different dimensions but without numbers. The activity is available in versions for grades K-12.
Grades K-2 (Lesson and Handouts, pdf of slides)
Grades 3-5 (Lesson and Handouts)
Grades 6-8 (Lesson and Handouts)
Grades 9-12 (Lesson and Handouts)