Theses notes (created in Latex) include: The definition of the derivative at a point (and motivation for the derivation) starting with the the slope of a linear function. Then the idea is generalized to the average rate of change for non-linear functions (also emphasizing the geometric interpretation of the slope of the secant line).Then, we move to the definition of the derivative as a function and as a limit. There are some exercises with the solutions. In Lesson 2, we discuss the definition o