Research on play and its positive effect on children's development is abundant. Adults can ensure that children receive the full benefits of play by becoming effective playleaders and by guiding children through enriching play experiences. Adults need to let children know that play is an important part of their educational experience. This can be accomplished by encouraging play and allowing sufficient time for children to play, both at home and in early childhood programs. Adults also need to realize that much can be learned about children from observing their play behavior. Adults should plan, create, and maintain an appropriate physical and social environment conducive to play. They also need to know when and how to intervene in children's play, and how to successfully enter and exit children's play episodes. (Contains 24 references.) (MDM)