Annika Riz loves math more than anything, so when she hears about a
sudoku contest at the local public library, she is determined to win
it--maybe then her friends Kelsey Green and Izzy Barr will see that math
is just as cool as reading and running. When the school carnival, the
biggest fundraiser of the year, comes around, Annika realizes her class
booth is losing money by selling their lemonade too cheaply. Annika
embraces her math skills, saves the day, and shows her friends that math
can be useful and even a bit of fun, too, in Claudia Mills's Annika
Riz, Math Whiz.