The supplement and ditto packet to the science/math strand of unit five contains materials to help the teacher carry out the instructional and assessment activities to kits 17-20. The two packets provide materials for both classroom activities and seatwork for individual students. Seatwork is intended for presentation under supervision rather than as individual tasks. Language on the materials for classroom use is in Spanish and the introductions to the packets are in Spanish and English. Supplement illustrations are provided to help stimulate oral language and conceptual development. In this unit they identify changes in matter with cutouts, show interaction, illustrate weather conditions, and group objects by systems. Science processes presented in this unit are observing, classifying, inferring, predicting, communicating, using numbers, and measuring. The ditto packet provides ditto masters for such activities as math problems, time-telling exercises, charts, clothes for paper dolls, and cutouts which distinguish the elements of a school community. Like the other strands of unit five, this strand features the theme of the school as a community. (DS)