Graphing a Function with Slope Value and Tangent Line

① This GeoGebra example dynamically displays a function graph along with its tangent line at a movable point, showing the slope value in real time to illustrate the geometric meaning of derivatives. ② Core mathematical concepts include function graphing, tangent lines, slope (derivative), and the effect of input parameters on the graph, involving linear equations and visual reasoning. ③ Construction highlights: a Textfield input box for entering the function expression, the Tangent command to create the tangent at a chosen point, the Slope command to compute and display the slope value, and a slider or input box to adjust the point of tangency for interactive exploration. ④ Suitable for high school and early college students learning calculus, ideal for classroom demonstrations or self-study of derivative concepts, and serves as a reusable template for teachers building interactive lessons.