During our reading time, I had a hard time to get my 5yo son's attention on the words of books. Most of the time he only liked to focus on the colorful pictures and scanned quickly at the word lines. So it's difficult to teach him to read and remember even the simple words. I gave Bob books a try and so glad that I picked them, since now the little boy has really focused on the words and learned them quickly, yay! The simple drawing of the books are intentional to withdraw the little ones' attention from the animated pictures, that's the main point. The only thing need to be improved is the connection between the words and the pictures. Sometimes my son can guess them easily based on the pictures like dog, cat, bird, bug without really learning the words. But it's helpful and effective to learn sigh words. I would strongly recommend these books for the very beginning reader to build up their confidence in reading.