Simple laboratory investigations are given which expose elementary students to optical crystallography techniques. Procedures and materials are designed for sixth-grade students. (SA)

Reexamines an experiment in which the volumetric fraction of oxygen in air was supposed to have been determined. Presents challenges to the procedure. (DDR)

Describes a class project in which students determine the best brand of paper towel in several categories. The activities and experiments completed during the project foster observation, measuring, collecting, data evaluation, writing, and mathematics skills. (BC)

Presents 10 activities in biology, chemistry, physical science, and general science. Activities focus on: alfalfa sprouts; soap test; density; skating on cold ice; Kirlian photography; titration analysis (with program listing); radioactive decay; and others. Each activity includes suggested grade level(s) and procedures. (DH)

Presents a critical review of laboratory adaptations for visually impaired students in general science, biology, chemistry, and physics over the past 30 years. Learning modes used by these students (since these are considered when making adaptations) and ways students benefit working independently in a science laboratory are discussed. (JN)