These booklets can be used as a supplement for Fundations. They don't have to be used as a supplement for Fundations. You can also use them to review trick/sight words. Use them for homework or classwork. They are designed to give your students practice with sight words. Books are organized into weeks. Each week has 2 books.
Check out my Fundations Trick Words Level 2 Bundle. It has all 17 units for a discounted price. Fundations Trick Words Level 2 Booklets (Units 1 - 17)