Once upon a time, many years ago, my youngest son was struggling to learn to read. In retrospect, I think it was simply a case of finding the block corner and any opportunity for imaginary or active play far more interesting than the storybooks in his classroom, but he was a bit behind his classmates, and his teachers were becoming concerned. So, during the summer between first and second grade, his teachers encouraged us to read to him A LOT, and work with a series of leveled readers that could be found online using the website Reading A-Z. This is such a fantastic resource.