Described is a novel approach to the teaching of projectile motion of sixth form level. Students are asked to use an analogue circuit to observe projectile motion and to graph the experimental results. Using knowledge of basic dynamics, students are asked to explain the shape of the curves theoretically. (Author/MA)

Describes chemistry programs in four Australian secondary schools. (CP)

Discusses the technique of utilizing "silent" demonstrations, demonstrations with a minimal of instructor initiated information, for teaching secondary level chemistry. (SL)

Describes an "environmental biology" syllabus offered to third year students at Ounsdale Comprehensive School. Six project areas are described: an individual investigation, a plant project, human biology, rural science, habitat surveys, interdependence. (CS)

Discusses limitations and corrections to be made in physics experiments involving the investigations of drag and terminal velocity on spheres falling through a liquid in accordance with Stokes' law. (SL)

The Systems Alternatives Project is an attempt to develop open classroom alternatives within a modular scheduling system. Biology students are given both action and test objectives that emphasize individualization. Structure of the project is detailed and an attempt to analyze the project evaluation data statistically is included. (MA)

Discusses the work of evolutionary biologists in determining how sexual reproduction arose. Topics explored include the nature of sex, bacterial sex, meiotic sex, and asexual reproduction. A diagram (which can be used as a duplicating master) illustrating types of bacterial sex is included. (DH)

Analyzed and classified were Individualized Science Instruction System (ISIS) minicourse performance objectives and criterion-referenced test items according to Bloom's cognitive "Taxonomy" to determine levels of cognition emphasized. The findings indicate that ISIS minicourse test objectives are written primarily at the knowledge and…

Described is the Cognitive Acceleration through Science Education (CASE) project in Great Britain. The project is investigating the possiblilty of accelerating the rate at which secondary pupils' logical thinking develops by using the science curriculum. A pilot project and parts of the curriculum are discussed. (RH)

This section of the journal includes several short notes related to the teaching of science in secondary schools in Great Britain. Notes are included on ways of presenting science, rural science, designing experiments in chemistry, science for students with special needs, knowledge of the metric and imperial systems, and the use of spreadsheets.…

Presented are three demonstrations for chemical education. The activities include: (1) demonstration of vapor pressure; (2) a multicolored luminol-based chemiluminescence demonstration; and (3) a Charles's Law/Vapor pressure apparatus. (RH)

Described is a simple demonstration that provides a way to determine if a given sample contains even a small fraction of superconducting material. The repulsion of the powder from a magnetic field is indicative of superconductivity. (RH)

Using the mole to link the macroscopic and microscopic can be made better by talking about numbers (of entities) rather than amount of substance (that is, moles). Two examples are given to illustrate this argument. (JN)

Discusses the role of chelating agents in (1) mayonnaise and salad dressings; (2) canned legumes; (3) plant foods; (4) liquid dishwashing detergents; (5) toilet soaps; (6) floor wax removers; (7) hard surface cleaners; (8) carpet cleaning; (9) bathtub and tile cleaners; and (10) photography. (JN)

Clearing is a simple and rapid technique in which 75 percent lactic acid is used to remove pigments and cytoplasmic contents of fresh leaves, enabling microscopic view of various internal leaf layers. Procedures for using the technique (which helps students gain a more thorough understanding of plant anatomy) are given. (DH)