Suggests an activity designed to stimulate student interest in optical illusions. By preparing posters of a number of optical illusions and mounting them on the classroom wall, many students will be motivated to seek an explanation for these phenomena. (JR)

Discusses the use of a set of experiments to provide undergraduate electrical engineering students with a knowledge of the state of the art in modern coherent optics from an engineering standpoint. (CC)

Describes a program in applied biology in which the simulation of the production of penicillin in a batch fermentor is used as a teaching technique to give students experience before handling a genuine industrial fermentation process. Details are given for the calculation of minimum production cost. (JR)

Discusses project work required for students in the Scottish Certificate of Sixth Year Studies, including students' and teachers' attitudes toward the project implementation. Included is a list of projects intended to add depth and interest to students' study of chemistry. (CC)

Discusses the characteristics of the Physics Activities Center established by the Kansas State University Department of Physics with the purpose of providing students the opportunities to "do their own thing". Included is a summary of its practical applications and a description of student reactions. (CC)

Discusses the structure and formation of snow crystals, outlines the history of snow removal, and describes techniques that can be used by students for studying snowflakes and relating their structure to the conditions under which they were formed. (JR)