States that puzzles are an important tool in helping children engage in the problem-solving process. Claims that children are interested in puzzles because they can be active as observers, problem solvers, and learners, with little or no assistance from adults and others. Defines nine characteristics of good puzzle-making situations. (MOK)

Provides some teaching tips for elementary teachers that are designed to enhance the natural interests of young children in science and help equip them with important science processing skills. Contains activities related to observation, classification, measurement, and communication. (TW)