Summary
Children (N = 45) four through 10 years of age were given open-ended play materials, and various aspects of their play were scored. Children four through five years of age made several simple constructions using few materials and made little attempt to integrate disparate types of materials in their constructions. Children from six to seven made more constructions using more of the materials. Children from eight to 10 made fewer, much more extensive constructions and integrated disparate types of materials.