THE BAD HABIT: Sister develops a habit of nail biting and various attempts to find a remedy are unsuccessful. When Brother notices a connection between Sister's math anxiety and her nail biting, he offers his services as a tutor. Sister's fingernails start growing back when she no longer worries about how to add and subtract fractions. FERDY FACTUAL: When Brother promises to help a new kid get settled in at school, he's shocked to discover that Ferdy Factual is a stuck up know-it-all that corrects everyone including Teacher Bob. Although Brother tries harder than most to be Ferdy's friend, the pint size genius continues to snub him. Regardless, when he becomes the laughing stock of the school, Ferdy finally realizes who his real friends are. Not only does Brother go to Ferdy's defence, his example helps Ferdy understand that sometimes the best way to make friends is to be one. In return, Ferdy takes the opportunity Brother presents to him to make it up to everyone by using his smarts to help the school football team win an important victory.