The document discusses using Big Huge Labs, a website with mashup tools, to promote visual literacy and deep thinking in students. It provides examples of how three of Big Huge Labs' tools - the Motivator, Mosaic, and Magazine Cover creator - could be used in the classroom, such as combining the tools with activities like VoiceThreads to have students explain their thinking. The document also discusses how to create call-out text boxes to have students explain the meanings they derive from images.