Typical lessons contain an alphabetized list of fifteen words with a brief entry for each including part of speech, concise definition, and proper usage of the word in the context of an interesting sentence that provides a mnemonic anchor for the word. There are 20 lessons in each level plus five review lessons.
All editions of Wordly Wise share a similar format giving interesting word histories, dealing with usage issues, and exposing common usage pitfalls. It's a vocabulary-building program that grows with the student, and makes vocabulary building interesting and entertaining.