https://www.khanacademy.org/math/algebra-1-tx-teks-imra-2026-publisher-initiated-changes/x77e86bfa312010ae:arithmetic-and-geometric-sequences-tx-teks 2026-07-22T12:21:28.248165541Z Arithmetic and geometric sequences Sequences are a special type of function that are useful for describing patterns. In this unit, we'll see how sequences let us jump forwards or backwards in patterns to solve problems. They even relate to some of the other types of functions we've already learned in interesting ways. **Unit guides are here!** Power up your classroom with engaging strategies, tools, and activities from Khan Academy’s learning experts. [**PDF**](https://bit.ly/3SoHbrm) unit