"These video tutorials introduce the basic concepts of modeling with Google
SketchUp."
Discovery Education unitedstreaming gives you a pdf with sites and information on Google SketchUp
"Google SketchUp and Discovery Education unitedstreaming™
Google and Discovery Education have teamed up to make it easier for K-12 educators to use technology in the classroom. We've created a series of lesson plans that use Discovery Education unitedstreaming and a couple of Google products, Earth and SketchUp, to teach social studies, language arts, math and geography. Available for elementary, middle and high school classrooms, these lessons are available for download right here on the Google for Educators site."
Examples of K-12 SketchUp projects
By clicking on the Web Content (including videos) link you will be able to explore the chapter SketchUp topics through videos!