Describes methods for collection, culture, observation, and making permanent stained preparations of the protozoan vorticella. Suggestions are made for experiments to investigate growth, reproduction, settlement, ecology, feeding, and osmoregulation. (CS)

Describes the preparation of selected aldehydes and ketones, alcohols, amines, phenols, haloalkanes, and tertiaryamines by differential scanning calorimetry. Technique is advantageous because formation of the reaction product occurs and the melting point of the product is obtained on the same sample in a short time with no additional purification…

Describes a study to determine (1) if introductory biology students (N=417) could master ecological concepts and improve their attitudes toward their immediate surroundings using a new unit, and (2) the best instructional format, with lecture materials brought inside or individualized instruction in the field via an audio-tutorial format.…

Describes a series of laboratory experiments and computer simulations of the motion of electrons in electric and magnetic fields. These experiments, which involve an inexpensive student-built electron gun, study the electron mean free path, magnetic focusing, and other aspects. (Author/HM)

Discusses the change from 1964 to 1978 in the trend of chemistry majors who have pursued advanced degrees, which shows that smarter students have chosen medical school instead of chemistry. (HM)

Investigates the misconceptions in physics among South African students. The physics test which was administered to selected high school and college students is included. (HM)

Describes a program developed to expose college chemistry students to some of the more modern information retrieval tools, as computerized online databases. Following classroom lectures and discussions, students individually develop a search statement relevant to their own research needs and run it in the Chemical Abstracts files. (BT)

Describes a laboratory technique for use in an undergraduate instrumental analysis course that, using the interpretation of window diagrams, prepares a mixed liquid phase column for gas-liquid chromatography. A detailed procedure is provided. (BT)

Describes a laboratory experiment for freeze-drying fruits and vegetables which aims to expose college students to the principles of drying and simultaneous heat and mass transfer. The experimental apparatus, procedure of the experiment, and data analysis are also included. (HM)

This study, conducted in an Australian institution, investigates the intellectual requirements of the mechanics section of a first-year college physics text. Instructional and prerequisite concepts were classified in terms of the intellectual skills required to understand them. (HM)

This paper, presented at the conference on the role of the laboratory in physics education which was held in Oxford, England in July 1978, describes the problems of physics laboratory courses in Africa. Suggestions for solving these problems are also included. (HM)

Discusses a case study experience in conducting scientific courses with undergraduates at the Universiti Malaysia Sarawak (UNIMAS) using Web-based learning environments to support conventional teaching sessions. Results showed online learning helped students become more interested, encouraged participation in class discussions, and provided more…

A study with nine physics students in a Quebec university found they saw themselves learning primarily outside the classroom as they solved assigned problems, saw few new concepts being introduced, and felt they had moved beyond memorization to application of concepts to problem solving. Students' perceptions were sometimes at odds with teachers'…

Discussed are the intentions and strategies needed for developing a national technology policy. A critical technologies list prepared for the U.S. is compared to Japan's priority list. The history of technology legislation is presented. (KR)

Discussed is a conference aimed at organizing the efforts to reform science education in the United States. Participants from business, industry, labor, scientific and engineering societies, and education associations were included. (CW)