Book 3 of 3. Goodreads 3.9, 31. Series: Why Did? Kaden enthusiastically accepts his teacher’s challenge to do ten activities that make him stronger and smarter. Why is Kaden trying so hard? Can he find ten activities he can do? Will he meet the challenge? At the end, Kaden looks right at the child reader and challenges them to fill out the chart at he end of the book with their ten activities that make them stronger and smarter. Will the child reader meet the challenge?