Cylinder Net Interactive Demonstration

① This GeoGebra example dynamically demonstrates the net of a cylinder, showing how the lateral surface unfolds into a rectangle while the top and bottom remain circles, bridging 3D solids and 2D nets. ② Core mathematical concepts include solid geometry of cylinders, surface area decomposition, and the relationship between three-dimensional shapes and their two-dimensional unfoldings. ③ Construction highlights: based on the summary, it uses the Circle command to create the top and bottom circular bases, Polygon to form the rectangular lateral face, and Cylinder to generate the 3D solid; objects include points A, B, C, D, E, F, circles c and c_1, polygon poly1, and segments b, d, e, f, a, g, h, allowing interactive folding/unfolding via sliders or drag. ④ Suitable for middle school to high school students learning introductory solid geometry, spatial visualization, and for teachers to illustrate the derivation of the cylinder surface area formula in classroom settings.