The "Stuff that Works!" series includes five titles: "Mechanisms," "Packaging," "Mapping," "Designed Environments" and "Signs, Symbols & Codes." These five curriculum guides were written by the City Technology team and published by Heinemann in 2002. Their goal is to provide ideas for integrated teaching of engineering, science, math, literacy and art in elementary classrooms. They were the outcome of a collaboration between two City College faculty members and seventeen New York City public elementary teachers. Each book includes an introduction to the topic, overview of its basic concepts, activities developed and implemented by teachers in their own classrooms, accounts by the same teachers of how these activities transpired, and other resources and standards alignments.