The document compares the physical, emotional, and moral development of children from preschool through high school. It notes that preschoolers enjoy physical activities like hopping and running, are playful but easily cry, and are less polite. Elementary students are interested in sports, their fine motor skills improve, they are eager to learn academically and compete with peers, and are obedient. High schoolers' development focuses on puberty, playing with friends, and learning emotional strategies. The document also observes the characteristics and implications for teaching special needs children.