Represent three-dimensional figures using nets made up of rectangles and triangles, and use the nets to find the surface area of these figures. Apply these techniques in the context of solving real-world and mathematical problems.
Students will learn how to find the surface area of a rectangular prism. Students should begin by finding the surface area of some particular prisms, by thinking about pairs of faces. Here's an example. After that, derive the formulas, and have students practice applying them. This video contains a good derivation of the formula. Conclude by giving your students this challenge.