I've used this book in the past, it really gets students reading and letter/sound recognition going. It's also pretty easy to keep the students on task with this as there is a lot of repetition activities. I really liked it and I think at the book stores in my area, I purchased it for 20,000원. Sadlier Phonics, Levels K$18.95Grade K Connects Sound to SymbolSadlier Phonics Level K starts with a review of beginning literacy skills and an introduction to the alphabet. Children learn consonant and short vowel sounds, progressing systematically from sound to symbol. Children are explicitly taught to use their knowledge of letter sounds to blend and decode words. A series of decodable readers allow children to immediately apply their newly acquired phonics skills. ISBN: 0821570005 Publisher: Sadlier-Oxford