I was thinking about this tonight as I wrote an email. This is something I teach my students the first day of school. It is imperative and essential for students to grow as readers:
The 5 finger rule:
When you choose a book open it up to any page. Give the book the "5 Finger Rule Test"
If you miss 0-1 words on the page the book is "Too easy" and you won't grow as a reader with "too easy" books.
If you miss 2-3 words the book is "Just Right" and you will grow as a reader because the book is "just right" for you.
If you miss 4-5 words the book is "Too hard" and you won't grow as a reader with books that are too hard to read.