- Author: Andrew Clements
- Binding: PB
The prize is in sight: a brand-new Hyper-Cross-Functional Bluntium Twelve computer system. All Jake has to do is beat third-grade's biggest know-it-alls, Marsha McCall and Kevin Young, in Despres Elementary School's science fair. It sounds simple, but becoming a know-it-all to beat a know-it-all may cost more than Jake can spend.