Describes a procedure for the growth of tobacco plants in flasks. Demonstrates plant tissue culture manipulation, totipotency, and plant regeneration in approximately 12 weeks. Discusses methods, materials, and expected results. (CW)

Examined the effects of an instructional method used to remedy students' difficulties caused by fragmented and incorrectly interpreted knowledge. Described the method using explicit concept-interpretation procedures. Finds that the method helped to revise students' deficient prior knowledge about acceleration, and helped them to interpret it…

Shows the difficulties of understanding the hypothesis a posteriori. Describes a scientific method containing phenomenologic, hypothetic, and theoretic phases. Provides the results of an experiment on simple pendulum oscillation by using this method. (YP)

Suggests that the overall educational experience of science aspirants has an indirect and latent role in preparing future types of researchers. Discusses arguments concerning the relationship between cognitive inclinations and educational experience, and how problem-solver and problem-identifier type students respond to educational dilemmas. (YP)

Investigated was the intellectual behavior of 66 student teachers of science. Suggests that the degree of integration of teaching practice with theoretical studies may be a more important factor than length of teaching practice. (YP)

Presented is a review of environmental ethics since the Belgrade Charter of 1976. Outlines seven ethical positions to be considered. Discusses ethics in environmental education practice. Focuses on four ways to lessen the dilemma of the presentation of values in environmental education. (CW)

Evaluates 16 commercially available courseware packages covering topics for introductory physics. Discusses the price, sub-topics, program type, interaction, time, calculus required, graphics, and comments of each program. Recommends two packages in measurement and vectors, and one-dimensional motion respectively. (YP)

Describes environmental education programs in the Lagos area. Reports survey results related to teachers' environmental action skills. Suggests some recommendations for environmental protection in the Lagos area and all states in Nigeria. (YP)

Introduces different methodological strategies in analyzing potential energy surfaces (PES) used in chemical reactivity studies. Discusses the theory of PES and gives examples to be used for student work. Provides procedures for calculating normal coordinates and vibrational properties of an activated complex. (ML)

Lists 24 frequently asked questions concerning hydrogen as a fuel with several responses given to each question. Emphasized are hydrogen production, storage, transmission, and application to various energy-consuming sectors. Summarizes current findings and research on hydrogen. An extensive bibliography is included. (ML)

Described are developments in medical electronics and physiological measurement. Discussed are electrocardiology, audiology, and urology as mature applications; applied potential tomography, magnetic stimulation of nerves, and laser Doppler flowmetry as new techniques; and optical sensors, ambulatory monitoring, and biosensors as future…

The remarkable growth of Clark Atlanta University (Georgia), a historically black institution, is attributed to aggressive pursuit of federal grants for science and engineering. After the 1988 merger of Clark College and Atlanta University, the new administration made a commitment to high-level science education through a broad research and…

Uses air temperature profiles--a topic taught in beginning meteorology courses--to illustrate the ease of restructuring the teaching/learning environment as a problem-solving mode. Students access real-time information through Accu-Weather's interactive database. Students use the data to answer the question, "What happens to air temperatures…

Presented are 126 reviews. Categories include amateur astronomy, children's books, computers and astronomy, cosmic rays, cosmology, education in astronomy, galaxies, general astronomy, history of astronomy, life in the universe, physics and astronomy, pseudoscience, quasars and active galaxies, reference, solar system, space exploration, stars and…

Described is a laboratory in which students are confronted with rigs built from full-sized industrial machinery and equipment. Students must draw a flow sheet, dismantle and draw key components, reassemble the parts, operate the rig, and interpret the run data. The laboratory and the course built around it are discussed. (KR)