Notes that the majority of brain development occurs in the first three years of life. States that infant and toddler interactions are beneficial to both ages, provided contact occurs in a safe environment. Discusses how infants and toddlers learn from each other through play, even if they are nonverbal, and further benefit from insights and…

Discusses the benefits of mixed-age grouping for children's social and cognitive development and reservations parents sometimes have about mixed-age groupings. Also discusses issues that teachers need to consider when implementing mixed-age groups: children's personal care routines; furnishings; children's language, motor, creative, and social…