Rocky Lottie is an early reader chapter book that will appeal to both boys and girls. Lottie Gunderson, girl scientist, is an enthusiastic and funny problem-solver. In this, the third Lottie book, she works on her Michigan project, loses something important to her, has a challenging time in a swimming class, and also has a mishap with her library books. Her wise grandpa and her friends help her, but ultimately Lottie solves her own problems and makes amends. Her positive attitude, her open emotions, and her bright thinking are models for young readers to emulate.