This was one of my favorite books growing up. I loved reading it over and over again. This book teaches kids that even if they like something everyone else doesn't keep liking it anyways. Camilla loved lima beans and the more she tried to prove she didn't the worse the stripes got. Until she finally owned that she loved to eat lima beans.
I would use this in a lesson about cause and effect. It could also contribute to a lesson on character development.