Described are instructional experiences with the use of homemade videofilms. Two particular techniques that can be useful in the production of these films are discussed including the use of chromakey and split-screen. (CW)

A demonstration which illustrates the concept of electric potential using electrophorous is presented. Equipment and procedures for the demonstration are discussed. (CW)

Described are the results of interviews of students regarding the concepts of "forced" and "natural" motion. Aristolean-like beliefs have been found to persist in students even though these views differ from orthodox physics views. (KR)

Describes a method for demonstrating absorption spectra of intensely colored solutions using a mounted grating and a specially designed cell. Allows a student to compare the spectrum of a white light source directly with the same light modified by an absorbing spectrum. Uses acrylic tubing to make the cell. (MVL)

Describes two experiments designed to provide concepts on the difference between heat and temperature and also bond energy. Investigates both a neutralization experiment and a ligation experiment. Notes inexpensive chemicals are used along with simple equipment. Discusses the sharing of lab results for a single class value. (MVL)

Describes 36 science activities. Topics include: osmosis, fermentation, anhydrobiotic organisms, breathing monitors, trypsin, weeds, amyloplasts, electrolysis, polarimeters, ethene ripening of fruit, colorimetry, diffusion, redox reactions, equilibria, acid-base relationships, electricity, power, resonance, measurement, parallax, amplifiers,…

Indicates and describes items that are incorrect in textbooks and a teacher edition of Discover SCIENCE for K-6. (YP)

Describes apparatus for Doppler demonstrations. Provides several pictures of the apparatus and ways it could be used. (YP)

Describes the Soviet educational system and physics textbooks and compares them to their American counterparts. Seventeen references are listed. (YP)

Discusses the equipment and techniques for taking photographs using a sound-actuated trigger. Describes a method using two flash units, two sound triggers, and a high-frequency clock to measure speeds. Provides several high-speed photographs. Lists 11 references. (YP)

Describes the teaching practices of one exemplary physics teacher. Identifies those teaching practices which can be considered exemplary and worthy of attention and analysis by physics teachers and teacher educators. Reports four assertions by the data from observations and interviews with teachers and students. (YP)

Discusses a high school advanced placement physics course cooperating with neighboring college. Describes the background, titles of experiments, report format, and discussion. (YP)

Describes the highly complex mixture of gaseous and particulate matter found in urban air. Explains progress made in the understanding of the physics and chemistry of air pollution, the effects of precursors on ozone, the role of biogenic hydrocarbons, and the principal benefit of methanol-fueled vehicles. (RT)

Lists annotations of books based on accuracy of contents, readability, format, and illustrations. Includes number of pages in each entry, price, and availability. Topics cover animals, biographies, space science, astronomy, archaeology, anthropology, earth and life sciences, medical and health sciences, physics, technology, and engineering. (RT)

Notes that energy is a difficult concept to learn and provides problems for many students. Stresses that if the science education community were to develop a standard nomenclature of energy-related terms, it would be possible to eliminate some of the difficulties without reducing depth of treatment. (Author/MVL)