[Common Deer Press] The Math Kids Club is back! After solving the case of the prime-time burglars, The Math Kids, Jordan, Justin, and Stephanie are ready to return to the original purpose of their club: solving math problems. And the district Math Olympics is the perfect opportunity to do just that. But before they can enter the competition, they need a fourth teammate. Faced-paced action adventure! The Math Kids set their sights on Catherine Duchesne. Even though Catherine has been quiet in class, she knows some really cool math tricks that are sure to help The Math Kids win the competition. A kidnapper strikes But when Catherine doesn't show up for school Jordan, Justin, and Stephanie spring into action to help their new friend. This middle grade book - Introduces readers to interactive math and logic problems they can apply to real-life situations - Dives into social issues and problem solving - Includes an appendix for hands-on learning