In this workshop, participants will learn about different components and levels of proportional reasoning. They will complete classroom tasks that illustrate ways to develop stronger conceptual understanding and that target different components of proportional reasoning. They will use video and written examples of student work. They will also conduct a student interview in order to reflect on students? approaches and to identify evidence of proportional reasoning at various levels. For the final project, participants will create a lesson that targets a component of proportional reasoning and that incorporates questioning techniques learned in the workshop. They will provide a rationale for the lesson that relates to the material learned in the workshop and reflect on their own learning.