Mae’s little sister Gerty is considered a science genius by her parents. Scientific “matter” was Gerty’s first word! While her parents dote on Gerty’s bubble popping and piano banging as matter manipulation and vibration, Mae is fed up. Science is not child’s play—making messes and asking questions—or is it? In that moment, Mae puts mind over matter and decides to be a scientist, too. Suddenly, the sisters are making messes and getting curious together. Colorful illustrations dotted with humor celebrate science and love in this brown-skinned family. (Ages 5-8)