A teacher education program intended to increase the variety of questioning techniques employed by science instructors is presented and evaluated. Used by four different groups of secondary teachers, this module presents a question category classification structure based on the Aschner-Gallagher system, but modified to be specific for science…

The first sections of this document include a discussion of the general characteristics and general objectives of environmental education and of criteria for choosing environmental education materials for classroom use. The final chapter is a guide to resources for environmental education at the secondary level. Annotated bibliographies of written…

Describes research undertaken to assess the validity of the Views of Science (VOS) questionnaire. The instrument purports to measure a subject's view of the tentativeness of science. Findings indicated that although the instrument appeared to have construct validity, the physical science backgrounds of subjects taking the test appeared to affect…

Describes the properties of colloids, listing those commonly encountered (such as whipped cream, mayonnaise, and fog). Also presents several experiments using colloids and discusses "Silly Putty," a colloid with viscoelastic properties whose counterintuitive properties result from its mixture of polymers. (DH)

Discusses the rationale for using photochemistry to merge descriptive chemistry and molecular orbital theory in first-year chemistry courses. Includes procedures and safety information for various activities, demonstrations, and experiments involving photochemical reactions. (DH)

Describes an experiment involving the preparation of copper iodide that gives stoichiometric results. Materials needed and procedures are discussed along with ideas on different ways to analyze the data. Pertinent chemical equations are presented. (BC)

Recommends using dramatic demonstrations on the energy in chemical systems as an audiovisual adjunct to lectures and laboratory sessions. Lists materials needed and provides procedures including safety tips for various experiments to produce chemical light, heat, and electricity; and concludes with hints for preparation/rehearsal. (JM)

Explains a projectile motion experiment involving a bow and arrow. Procedures to measure "muzzle" velocity, bow elastic potential energy, range, flight time, wind resistance, and masses are considered. (DH)

Presents two models and two demonstrations targeted at student understanding of projectile motion as the sum of two independent, perpendicular vectors. Describes materials required, construction, and procedures used. Includes a discussion of teaching points appropriate to each demonstration or model. (JM)

Describes activities (demonstrations/experiments) used to introduce history of periodic properties--without electrons, orbitals, filling shells, or any conception of atoms beyond Dalton's model. Activities supplement first chapter in a currently available chemistry text. Indicates potential danger of experiments if proper safety precautions are…

Instructions for constructing cross staffs and quadrants are provided. Astronomy teaching methods using the two devices are discussed. These include locating common constellations with the cross staff and following a star (or moon, sun, or planets) by reading the altitude and azimuth with the quadrant. (JN)

The position that field organizing paradigms need not be agreed upon by science education researchers to provide meaningful research is defended. Research needs identified by the author include: constructing adequate operational definitions; making raw data available; cross standardization of measuring instruments; and encouraging PhD candidates…

Evaluates a module for training science teachers to ask cognitive questions. (SL)

Describes a student science exposition which includes individual research and team competitions, noncompetitive student exhibits, films, tours, workshops, and social events. Indicates that this combination of activities makes the exposition a real science "fair." (JN)