The third volume in the “Growing Up Stories” series by Robie H. Harris and Michael Emberley focuses on the behavior and developmental milestones of two-year-olds. The multilayered text has an inviting story for younger children about twins Jasmine and Jackson and information for older children (and parents) about why two-year-olds behave the way they do. Information about twins is incorporated into both levels of the narrative. Brown-skinned Jasmine and Jackson are distinct individuals with differing skills, accomplishments, likes, and fears. Jasmine is the first to use the potty and crawl from her crib; Jackson is very proud when he dresses himself for the first time. Jasmine is worried about disappearing down the bathtub drain; Jackson fears getting sucked up the vacuum cleaner hose. The twins love imaginative play, mimicking adult behavior, and asking questions—it’s all part of learning about themselves and the world around them. Harris and Emberley have created another winning book that speaks to children’s fascination with other children—and themselves. (Ages 3–6)