Katie Carpenter is one smart fourth-grader, and she's determined to prove it by winning the county robotics fair. But when her dopey older brother gets himself grounded, it ruins her plans to travel to Capital City for the competition. So she has to do the unthinkable: help him get out of trouble. To do that she'll have to remember her favorite quote: "A genius sees connections where others see none." Includes a bonus section on the scientific concepts found in the story. 10 chapters. 16 illustrations.