Hannah's Derivative Lesson Applet

This GeoGebra applet dynamically illustrates the derivative of a function through interactive input fields and slope lines. Users can adjust function parameters and variables to observe how the tangent line's slope changes in real time, reinforcing the geometric and analytical meaning of the derivative. Key mathematical concepts include functions, derivatives, tangent lines, and variable variation. The construction leverages GeoGebra commands Textfield, Line, and Slope, along with objects such as InputBox1, X, A, h, B, a, and m to create an engaging lesson interface. It is suitable for high school calculus introduction, flipped classroom activities, or independent math exploration.