Here are a selection of classes that would be good starting points to expand your own knowledge about a new topic and get ideas for activities to integrate into your class. They have 100+ titles that range from very bad to fantastic. Below are three categories of Make: books and some of the best titles from them.
Tons of the Make: Book Series is available at the Chicago Public Library!
These are all introductory books on a range of different topics. These books are useful for sparking ideas and gaining new perspectives. *Suggestion* Don't bother buying any of these, find them at the library, the content is usually pretty light overall.
Make: Book Series focused on using electronics when making. Books serve as good reference materials and span from total beginner to advanced user.