Google SketchUp is an extremely powerful 3d modeling tool useful for presenting geometric concepts and exploring 3d space in the classroom. The free version of SketchUp offers most of the same tools used by professional architects all over the world. SketchUp's familiar pencil and paper paradigm presented in a software context makes it easy for anyone to use this tool. This course is intended for students with little or no 3d experience, who want to learn how to build 3d models in Google SketchUp.