Shows how flexible electric boards can be made from manila folders, strips of foil, and a battery. These boards are lightweight, and the electrical pattern can easily be changed. (JN)

Described are integrated science and mathematics activities that focus on gathering, displaying, and interpreting data on balloons. Students are involved in sampling, taking polls and surveys, doing experiments, classifying, estimating, and measuring. Included are directions, extensions, and activity sheets for students and parents. (KR)