Young children have everyday contact with wheels. They see wheels on toys, tricycles, wagons, automobiles, trucks, and many other vehicles. They make constant use of wheels in their play activities. Even though they use wheels frequently, they need help in focusing on the meaning of a wheel and how it is useful. As they grow in their understanding of wheels they will be able to make use of wheels more effectively.
Activities include experiences with several science processes. Children classify objects into objects that will and will not roll and into wheels and non-wheels. Observations are made of wheels, parts of wheels, and uses of wheels throughout the unit. Inferences are made about wheels freom the observations as children identify hidden wheels by touch, observe wheels turning on an axle and with an axle, and explore the ways in which wheels make work easier. Children also make inferences about hidden pictures as they use information to arrive at their answers.