Skilled readers use a variety of strategies when choosing the right book. The Rule of Thumb is a quick and easy way to determine if a book might be a holiday, a just right, or a challenge. When using this strategy students open to any page in a new book and begin reading. They keep a count of the number of words they struggle to read with the fingers on one hand. If they reach five words the book might be a challenge for them. We understand, however, that this is just one way to choose a book! We must also consider genre, plot structure, theme, and more!