In the English language alone, there are over 550 words for describing the emotions we feel. Emotions are multilayered, variable, and sometimes overwhelming. Identification is a crucial step in understanding and responding to emotions in a healthy way. Young readers learn about the big and little emotions that color their relationships and experiences. Investigations of common emotions equip readers with strategies for identifying and dealing with their feelings. Primary sources highlight innovative directions in the study of emotional intelligence, while simple explanations help children cultivate self-awareness in their own lives.