The fourth book in the New York Times bestselling series that's full of funny jokes, clever science experiments, and robot hijinks."I never thought science could be funny . . . until I read Frank Einstein. It will have kids laughing." —Jeff Kinney, Diary of a Wimpy Kid In Frank Einstein and the EvoBlaster Belt, Frank—along with his best friend, Watson, and Klink and Klank—once again finds himself in competition with his classmate and archrival T. Edison and his sign-language-speaking sidekick, Mr. Chimp, over Frank's newest invention: the EvoBlaster Belt, which allows the user to evolve and devolve into other forms of life, blasting from one species to another. The Frank Einstein series encourages middle grade readers to question the way things work and to discover how they, too, can experiment with science.