I've used this series for many years now. I like the fresh covers and the content is clear, sequential and challenging enough for struggling readers. It complements my use of the Wilson Method as well.
We love the entire Explode the Code series in this house! There is never a complaint when it is time to get this book out! Often my daughter completes the assignment without me even having to ask her... which is pretty close to a miracle in this house. The lessons are quick, filled with funny illustrations, and painlessly teach phonics. If you enjoy this series I highly recommend the Spellwell series by the same author.
Explode the code series are for excellent vocabulary building.
My kids love those illustrations of the book, and it strengthens phonics, word usage, and basic vocabulary foundation for the younger elementary school children. I hope there would be this kind of series for the older children, too!