Study in Human Development, Part 3

Illustrates human development at 19, 24, and 32 months, and emphasizes gross and fine motor development and beginnings of cooperative play. Shows how, at 19 months, a boy imitiates building a block tower, drinks by holding a glass with both hands, and throws a ball; at two years he walks up stairs, shows hesitation and caution about descending, and makes marks on paper; at 32 months the child draws patterns and a crude man, plays more cooperatively with other children, and uses a wide variety of toys and play equipment.