My kids love this book! They are 1.5 and 3.5, and they can say the interactive words on cue and sing the song. The Nut series continues the true brilliance of Eric Litwin's original Pete The Cat books It's great for learning language and to read. It also allows for a more enjoyable bonding experience with my kids when I read the book. I can bring up the song or words from the book in the kids' lives when I want to remind them of the lesson in the book.