The land on which we dwell belongs to the Confederated Tribes of Grand Ronde, the Confederated Tribes of Siletz, the Kalapuya, and the Anatchuyuk. It is important that we recognize the indigenous peoples of the region in the work that we do. I asked for permission from a member of the tribes before creating this lesson. In this lesson, we will explore the barter relationship amongst the indigenous peoples of the region, the fur traders, and the emigrants through the use of proportional reasoning and linear relationship modeling. We will establish proportional relationships through bartering, track the proportions through the use of a table, and model the relationships through graphs. The goal is for students to understand modeling proportional relationships through the experience of peoples who have lived on the land. How can I use the history of my place to explore and represent a proportional relationship?