Third grade is starting to be fun. After all the social challenges and tasks of learning multiplication, Little Lisa has found her passion-mathematics. For the first time in her family history, Little Lisa gets a perfect score on her third grade math assessment. What does this mean? Her teacher asks Little Lisa to help her classmates learn math. How is she supposed to help 20 classmates? Will Little Lisa get a new social title from her friends? This is just what Little Lisa needed-another problem to solve!