Presents two examples of matrix technique discussion units, which are intended to provide some initial structure to aid teachers in planning classroom discussion. (Author/MKR)

Reviews conjectures that were presented when the Fellows of the early Royal Society of London, founded in 1662, carried out investigations into the origins of life. (Author/MKR)

Discusses the relationship between a person's phenotype and allele products, which are different forms of genes. (MKR)

Discusses a series of experiments to establish a significance of temperature difference in rates of cooling, to illustrate the connection between energy transfer and the consequent temperature changes for thermally connected systems that are not in equilibrium. (MKR)

Presents an activity in which students draw the decay curve for a medical radioisotope and determine its half-life. (MKR)

Describes an experiment to investigate chemical changes, pH, dissolved oxygen content, light intensity, and temperature in water containing aquatic plants. (MKR)

Young aspirant scientists and technologists (n=82) and nonspecialist mainstream classroom counterparts (n=391) completed a 26-item questionnaire to ascertain their perceptions of the nature and methodology of science. Significant differences were found on six items. (Author/MKR)

Results of a case study indicated that male (n=8) and female (n=10) students view the nature of science differently. Girls tended to perceive science more in terms of workable solutions to problems and its enabling power to help people. Boys leaned towards knowledge making, logical explanations, and new discoveries. (Author/MKR)

Reviews the objectives of laboratory work in chemistry education, current laboratory practice, and factors likely to impact on the nature of laboratory work in the future. Proposes that more investigation-style laboratory work be provided in order to foster the development of students' investigation skills. (Author/MKR)

Provides a framework that incorporates the diverse elements of risk management in science education into a systematic process and is adaptable to changing circumstances. Appendix contains risk management checklist for management, laboratory and storage, extreme biological and chemical hazards, protective equipment, waste disposal, electrical…

Outlines the Salter's approach to teaching and learning science at the Junior Secondary level by showing how the phenomenon of fire is treated in curriculum materials. Discusses contents of the teachers' guide, student texts, and assessment pack. Gives an evaluation of the usefulness of the approach in the Australian context. (Author/MKR)

Presents a procedure to demonstrate how the speed of sound in air or within a denser gas can be calculated quickly and accurately in the laboratory. (MKR)