This study investigated preschool science environments in 20 preschool classrooms (N=20) in 13 midwestern child care centers. By operationalizing Neuman's concept of "sciencing," this study used The Preschool Classroom Science Materials/Equipment Checklist, the Preschool Classroom Science Activities Checklist, and the Preschool Teacher Classroom/Sciencing Form to analyze the availability of science materials, equipment, and activities for preschoolers in the classroom. Each teacher was videotaped for two consecutive days during free play time. The study showed that half of the preschool classrooms had a science area. The activities that the preschool teachers engaged were mostly unrelated to science activities (86.8%), 4.5% of the activities were related to formal sciencing, and 8.8% of the activities were related to informal sciencing.