Finding the Derivative with Secant Slopes

This example demonstrates the concept of the derivative by allowing users to manipulate secant lines and observe how their slopes approach the tangent slope at a point on a function's graph. Key math concepts include derivatives, secant lines, tangent lines, slopes, and similar triangles. It is constructed using GeoGebra commands like Point, Line, and Slope for objects such as function f, point P, point A, parameter a, and slope m. Ideal for high school calculus education to visually explain the geometric interpretation of derivatives.