I used this with my son's Five in a Row curriculum. My son thought it was ok, I disliked it. They are mean to the duck...is the idea to teach children to go home on time so they aren't beaten? It also has a huge run on sentence towards the end. I know many people consider this a clasic, but I found it annoying. I would skip this one in the Five in a Row curriculum and go straight on to "A Pair of Red Clogs".