I LOVE your books. I am a former first grade teacher who taught using phonics all along at a private school. I am using the set of 3 books for two struggling 3rd grade students. They need review of the basics, but they can manage most of the text on the advanced side and they love to have fun and get a break on the right hand side. I have all 3 books and my students both ordered all three books because we are virtual now and I want them to enjoy a real book. I am also sure they will look at the books and read them at times other than our sessions. I have shared them on several reading pages that I am on FB. Especially The Science of Reading-What I Should Have Learned in College.Thanks so much for creating these books. I hope you continue on with the vowel combinations. You might find the system, Reading Simplified interesting. It is a leading edge and growing program for teaching kids to read internationally. You could explore their scope and sequence called, The Streamlined Pathway.