I've been doing a lot of thinking about the Learning The Alphabet and Exploring Sounds In Words books. I've decided to leave the Learning The Alphabet book as it is. It will continue to have all the different types of pages needed to complete the level, including oral blending, rhyming, handwriting, and sound story pages. For beginning students and teachers, it would be too hard jumping from one book to another. And I realized it would be too hard for me to explain it.
On the other hand, for the Exploring Sounds In Words level, I'm going to keep the idea of using separate books for certain of the skill pages. I'm working on revising the directions at this level and I think I will be able to make the use of the various books clear.