Derivative of Natural Log Function - Interactive Exploration

① This GeoGebra example dynamically demonstrates the derivative of the natural logarithm function f(x)=ln(x) by showing how the slope of the tangent line changes along the curve. ② Core mathematical concepts include the definition of the derivative, tangent line slope, the derivative formula d/dx ln(x)=1/x, and the relationship between a function and its derivative graph. ③ Construction details: Based on the summary, the construction uses GeoGebra commands such as Point, Circle, Tangent, Intersect, and Vector, along with objects like function f, point A, circle c, tangent line g, intersection points B and C, vectors u, v, h, buttons, and text, enabling interactive discovery. ④ Suitable for senior high school or introductory college calculus students, this resource serves as an inquiry-based learning tool for understanding the geometric meaning of derivatives, and can also be used by teachers for classroom demonstrations.