Red Hot Roots is a secular workbook curriculum that teaches vocabulary through learning prefixes, suffixes, and roots. Two books are available. The first book is suitable for grades 3-5 and the second book is designed for grades 6-9. The second book covers some of the same material as the first book, but with more roots, prefixes, and suffixes. Ideas for games are included in the book. Read more about the books and see samples at Amazon.com.