Presents an activity in which students investigate the formation of solid ammonium chloride aerosol particles to help students better understand the concept of acid rain. Provides activity objectives, procedures, sample data, clean-up instructions, and questions and answers to help interpret the data. (MDH)

Suggests that disinterest in physics occurs because students and adults can apply everyday concepts to solve problems without understanding the underlying physics concepts. Proposes Wagenschein's Exemplary-genetic Method to teach physics and illustrates the method with examples taken from history. (MDH)

Describes the use of Vee maps in helping students understand scientific investigations. (PR)

Describes a unit on magnetism that utilizes hands-on activities in which students make hypotheses for discrepant behavior, discover whether a magnet attracts one object through another, measure the strength of magnets, explore levitating paper clips, and play a game dependent on magnetic attraction. (MDH)

Presents a model of a generic atom that is used to represent the movement of electrons from lower to higher levels and vice-versa due to excitation and de-excitation of the atom. As the process of de-excitation takes place, photons represented by colored ping-pong balls are emitted, indicating the emission of light. (MDH)

Argues that by examining which concepts of a particular area of physics are fundamental and which are defined, teachers can choose concepts for investigation that progress logically and should minimize students' misconceptions and confusion. (Author)

Describes a way to enhance student/instructor communication through regular student feedback on key concepts. Argues that examinations also serve this purpose but are too infrequent and that anonymous quizzes can be used effectively. (DDR)

Describes how Mexican-American language-minority students construct biology concept meanings based on extant linguistic skills. Provides an instructional activity that engages students in constructing meanings through mediational means. Contains 35 references. (DDR)

Recommends that numeracy be better coordinated and integrated across the curriculum and that teachers examine the image of mathematics presented to children. Discusses the value of eliciting children's ideas about and experiences with numbers and measuring. (DDR)

Presents an activity designed to stimulate student interest and facilitate the study of microorganisms. Focuses on an epidemic situation in which students play the role of epidemiologists. (DDR)

Investigates school children's images of scientists in Brazil, the United States, France, Italy, Chile, Mexico, India, and Nigeria by having them make drawings. Discusses the relationship between image and career choice. (DDR)

Argues that social studies teachers need to involve their students in building their own pyramids of knowledge from basic facts into broad general principles. Discusses a class at Moorhead State University (Minnesota) that uses the inquiry method to help student teachers learn to construct lessons that follow the…

Six 12-year-old students were followed during an eight-month course using "Energy and Change" curricular materials, which introduce ideas related to the Second Law of Thermodynamics through an abstract picture language. Concludes that students had higher levels of generalization in their explanations of physical, chemical, and biological…

Addresses the teacher's role in the integration of science and technology studies within an educational reform in Israeli junior high schools. Concludes that a realistic goal would be to enable science and technology teachers to cooperate with one another. Contains 35 references. (DDR)

Describes an empirical qualitative analysis of some of the traditional practices and beliefs with respect to health regimens and marine-related activities that operate in the daily lives of people in a village in Trinidad and Tobago. Contains 28 references. (DDR)