Details undergraduate physiology laboratory experiments that demonstrate mechanical properties of cardiac muscle, using strips from the ventricle of a rat heart. Includes procedures for obtaining length-tension curves, demonstrating the role of calcium in excitation-contraction coupling, and showing effects of several cardiovascular drugs…

Describes the development and implementation of an investigative laboratory class. The new laboratory design has been determined to be a success by faculty, teaching assistants, and students. Includes a sample laboratory description. (DKM)

Describes a repeat-measure study that provided data regarding learning styles based on social interaction and perceptions of a scientific collaboratory system from 40 university science students working face-to-face and remotely. Results showed students with strong competitive learning style preference had slightly more positive perceptions of the…

Presents an activity on chemical changes and experimentation with testing the roles of various reactants in accomplishing the changes. (Author/KHR)

Analyzes student performance on solution calorimetry problems in an introductory university chemistry class. Includes data from written classroom exams for 207 students and an extensive longitudinal interview with a student. Indicates learning difficulties, most of which appear to originate from failure to understand, that net increases and…

Introduces chemistry laboratories in which students have the opportunity to conduct laboratory projects in multiple sessions that promote planning, thinking, technical performance, and responsibility. Defines the process of experimentation and its applications to science laboratories and describes successful project applications. (YDS)

Describes a literature-based approach that was used successfully at the University of Cincinnati in a one-quarter advanced undergraduate inorganic chemistry laboratory course. (KHR)

Describes an inquiry-based teaching method implemented in an undergraduate exercise physiology laboratory course. Indicates students' strong, positive feelings about the inquiry-based teaching method and shows that inquiry-based learning results in a higher order of learning not typically observed in traditional style classes. This teaching method…

Examines the psychology of learning and its application to work in the laboratory. States that the working memory capacity of students is limited; therefore the amount of information they can process needs to be controlled and "recipe following" in the laboratory is perfectly reasonable. (RT)

Discussion of explanations and knowledge representation within knowledge-based systems focuses on the development of an expert system for purification of proteins in a Swedish laboratory. Topics include domain conceptualization; a multiple-explanation construction model; a study of laboratory staff that investigated construed explanations; and…

Discussion of distance education activities at the University of the South Pacific focuses on chemistry courses that were developed for distance teaching. Problems with arranging a practical work component, including laboratory facilities, are addressed; the need for adequate tutorial assistance is discussed; and problems with slow turn-around…

Describes a performance assessment protocol that rates six goals: (1) methodology of research, (2) use of equipment, (3) accuracy in measurement, (4) application of concepts and formulas, (5) use of mathematics, and (6) completeness and clarity. Provides an example performance task evaluation sheet. (MVL)

Describes an exploratory study to identify determinants of elementary student's intentions to perform laboratory and nonlaboratory science activities. Fishbein and Ajzen's theory of reasoned action was used as the basis for the study. (PR)

Authors describe a set of controlled ecosystems that can be used to demonstrate the effects of herbivory on the health and growth of a plant population and of predation on the growth of a primary consumer population. The system also shows the effectiveness of biological pest control measures in a dramatic way. The construction of the ecosystems is…

Presents instructional methods biology teachers can use to make their presentations more interesting. Author describes variety of methods for introducing lesson on the heart and discusses use of metaphors, form, models, and fractals in instruction pertaining to circulatory system. Presents idea of using Capon's "The Supper of the Lamb"…