Chemical bonding is discussed from a bond energy, rather than a wave mechanics, viewpoint. This approach is considered to be more suitable for the average student. (The second part of the article will appear in a later issue of the journal.) (AL)

In each of three studies, students using computer assisted instruction for supplemental drill and practice in a first organic chemistry course performed consistently higher than control students on sections of the course examinations related to the content of the programs. (AL)

There were no differences in the understanding of physical optics and ability to solve physical optics problems after instruction or on a delayed test between students with or without prior instruction in wave motion. (AL)

Students debating in a controversial scientific issue were asked to defend the position opposite to that which they initially held. The technique produced much student involvement and exposed students to the professional literature. (AL)