Mental models of metallic bonding held by learners' from three academic levels, secondary school (year-12), undergraduate and postgraduate, were probed using semi-structured interviews including the use of Interview about Events focus card depicting metallic properties and cards containing depictions of models from curriculum material. Learners…

The study of chemistry includes many abstract concepts that students may find difficult to understand. A fundamental yet troublesome part of introductory chemistry courses is the topic of electron configuration and specifically quantum-mechanical orbitals. In an effort to examine the way students internalize the concept of atomic orbitals and how…

The purpose of this study was to compare in greater depth the qualitative differences between what previous researchers have called a deep versus surface approach to learning science. Six grade 8 students judged as typical using a deep or surface approach were videotaped or audiotaped during class group laboratory activities in a chemistry unit.…

Disucusses the advantages of using the case method in science curricula, involving its definition, classification, and objectives. Indicates that case studies could contribute to the involvement of social and economic aspects in science learning. Included is a description of the 1972 trial study on the value of the case approach. (CC)

Discusses the offering of a course in chemical and industrial hazards for junior and senior chemistry majors at City College of New York in 1972. Suggests inclusion of laboratory and industrial safety education as a formal part of chemistry or science curricula. (CC)

Summarizes characteristics of underprepared students and remedial programs undertaken at various institutions. Indicates that most of the programs are unsatisfactory, and the students' weaknesses primarily result from poor mathematics preparation and reading ability, lack of inductive and deductive reasoning, and communications deficiencies. (CC)

Discusses the theories, construction, operation, types, and advantages of fuel cells developed by the American space programs. Indicates that the cell is an ideal small-scale power source characterized by its compactness, high efficiency, reliability, and freedom from polluting fumes. (CC)