"Luck the Duck" not only focuses on the short vowel U sound, but is also about a silly duck that is very curious and jumps into something smelly. He tries different things to get rid of the smell, and he just seems to get even dirtier. This book teaches us, in an entertaining way, that if we keep trying to reach our goal, even if it seems like it is getting worse, we should never give up because eventually we will figure out a way to solve our problem...