IM 6.1.15 Lesson: More Nets, More Surface Area

① This example demonstrates how to calculate the surface area of several 3D solids using their nets, helping students visually grasp the correspondence between three-dimensional shapes and their two-dimensional unfoldings. ② Core mathematical concepts include surface area calculation in solid geometry, construction and identification of nets, and the relationships among faces, edges, and vertices of common polyhedra such as rectangular prisms and other prisms. ③ Construction notes: Although no specific GeoGebra commands are provided in the summary, typical lessons use polygon tools to draw the faces of nets, translation, rotation, or folding animations to show the transformation between net and solid, possibly with sliders controlling fold angles, and area calculation tools to sum face areas automatically. ④ Suitable for upper elementary to early middle school students (ages 11-13) as an introductory exercise in geometry units on surface area and spatial visualization, and useful for teacher demonstrations or student self-exploration.