eNotes offers Puzzle Packs to each Literature Lesson Plan in conjunction with Teacher's Pet Publications. If you already own the LitPlan for a title, the Puzzle Pack will refresh your Unit Resource Materials and Vocabulary Resource Materials sections plus give you additional materials you can substitute into the tests. If you do not already have a complete LitPlan, the Puzzle Pack will give you some supplemental materials to use with your own plan. There are two main groups of materials: one set for unit words (such as characters' names, symbols, places, etc.) and one set for vocabulary words associated with the book.