A Different Kind of Change

In this video lesson, students encounter a situation where a quantity increases then decreases. They don’t yet have a name for this new pattern of change, but they recognize that it is neither linear nor exponential, and that the graph is unlike the graph of an exponential function.

Students make sense of this new kind of relationship in a geometric context and describe it in concrete and qualitative ways (MP2).

Algebra 1, Episode 1: Unit 6, Lesson 1 | Illustrative Math