Eight-year-old Sophie is a genius! She's reading college level text books and she especially loves math. When her parents won't buy her a new graphing calculator because it isn't what "normal" kids her age play with, Sophie must find a way to get $100 to buy it on her own. She soon figures out that friends can be helpful, but can they help enough? This is the book that Lisa Graff read from when she visited Harrison last year!
