I use this learning mat in sheet protectors allowing my students to write on them and wipe them clean. Display the PowerPoint and have the students fill in each section of the write on wipe off mat. I then have students share to check answers and have "expert" students help others. There are a total of 15 prompts on the PowerPoint that will give tables, graphs, equations, and word problems for students to find the constant of proportionality and use the constant to represent the situation in multiple ways. I usually stop and discuss further after each prompt.