There is some confusion in discriminating basic educational research (which explores the why's and how's of learning) from applied research (which seeks to test the implications of basic research results) because some investigations are conceived without a clear purpose. Thus, it is not uncommon for researchers to suggest implications that…

IN TWO EXPERIMENTS, FEEDBACK WAS CONCEPTUALIZED AS A CYBERNETIC PARADIGM INVOLVING STUDENT-PROFESSOR INTERACTION, AND WAS USED VIA VIDEO TAPE TO IMPROVE TEACHING OF A FIVE MINUTE LESSON BY STUDENT TEACHERS. IN EXPERIMENT I, FOR THE 24 STUDENTS EQUALLY DIVIDED INTO FEEDBACK AND NO FEEDBACK GROUPS, NO SIGNIFICANT DIFFERENCES APPEARED IN 29…

A laboratory summer workshop in materials engineering for high school seniors is discussed. Held at North Carolina State University, the workshop is designed to enlighten university-bound, science-oriented high school students to materials science and engineering, and to construct communication links with high school faculty. The workshop…

Recommends determining molecular weights of liquids by use of a thermocouple. Utilizing a mathematical gas equation, the molecular weight can be determined from the measurement of the vapor temperature upon complete evaporation. Lists benefits as reduced time and cost, and improved safety factors. (ML)

Explains gyroscopic motions to college freshman or high school seniors who have learned about centripetal acceleration and the transformations of a couple. Contains several figures showing the direction of forces and motion. (YP)

Discusses the importance of laboratory experiments in which students were given a few guidelines and small groups had to design the experiments. Describes the old and new orders of laboratory projects and the effects of change. (CW)

Expresses concern over recent actions by coalitions of neighborhood activists and animal rightists in the San Francisco area that are seeking to block new biology laboratories. Argues that costly delays and disurption of research could result. (TW)

Describes a two-session experiment designed to provide a good illustration of, and to improve student knowledge of, the Grignard reaction and nucleophilic substitution. Discusses the procedure, experimental considerations, and conclusion of this experiment. (CW)

Describes the rationale for using computer-assisted videodisc lessons to enhance introductory chemistry courses at University of Illinois, and presents sample lessons to illustrate what students see and do as they proceed through the lessons. Lesson construction and use are reviewed. (MBR)

Describes laboratory exercises which demonstrate a new simplified technique for deforming thin samples of crystalline materials on the stage of a petrographic microscope. Discusses how this process allows students to see the development of microstructures resulting from cracking, slipping, thinning, and recrystallization. References and sources of…

Presents a technique for eliminating errors in the analysis of the nickel subgroup of the aluminum-nickel group cations. Describes the process of color and chemical changes that occur in this group as a result of ligand and coordination number changes. Discusses opportunities for student observations. (TW)

Discusses consequences of using computer-assisted learning (CAL) packages for experiment planning in undergraduate physical chemistry laboratories and examines textbook presentations and syllabus criticism. An approach to syllabus reconstruction that combines operational research with experiences of CAL development program is demonstrated through…

Student-centered approach of scoring the concept maps consisted of three elements namely symbol system, individual portfolio and scoring scheme. We scored student-constructed concept maps based on 5 concept map criteria: validity of concepts, adequacy of propositions, significance of cross-links, relevancy of examples, and interconnectedness. With…

Presents a discussion of the need to present a realistic view of the process of science to students in the laboratory. Several activities and readings are suggested. (SA)

Describes the use and handling of alkali metals in school laboratories and seeks to reexamine precautions which one may reasonably take before executing routine procedures since their use, even by skillful teachers, occasionally results in accidents in the form of violent explosions. (Author/SK)