Using hands-on activities and the "Plan, Do, Review" approach, this physics curriculum for 4-year-olds is designed to develop an early interest in and enthusiasm for science and to excite children about learning in general. The curriculum is designed to be implemented biweekly in preschool or child care programs but may also be presented at a science center or museum. The introduction to the curriculum describes its philosophical underpinnings and the general structure for learning sessions. Part 1 of the curriculum presents four activities conveying the following concepts: (1) magnetic properties of attraction and repelling and magnetic fields; (2) complete circuits which allows electricity to flow; (3) properties of light, including shadows, reflection, refraction, and source of energy; and (4) machines making work easier. Each activity description details the scientific concept, delineates instructional procedures, and lists additional activities. The sessions begins with a group time, including a story to introduce the relevant concept. Teachers introduce children to possible activities, and place materials in learning centers. Adults join children in learning centers, engaging them in questions intended to enhance their understanding. After activities have been completed, children return to group time to share their activities. Part 2 of the curriculum contains additional instructions for each activity and some of the materials used. Part 3 lists books and presents fingerplays and songs relevant to physics principles and appropriate for preschool children. (KB)