In response to pressures to integrate literacy and science learning, an observational, comparative analysis was conducted exploring the added value of blended science and literacy curricula over inquiry-oriented science curricula in two 2nd-grade classrooms (ages seven to eight). Data were collected over ten weeks by the research team, and…

The number of experimentally derived structures of cellular components is rapidly expanding, and this phenomenon is accompanied by the development of a new semiotic system for teaching. The infographic approach is shifting from a schematic toward a more realistic representation of cellular components. By realistic we mean artist-prepared or…

Describes the theory and operational procedure of seeding clouds with 10 cm. long fiberglass fibers in order to suppress lightning. Histograms show results of experimental work. (CP)

Two recent articles in this journal described how an air core solenoid connected to an ac power source may restore the magnetization of a bar magnet with an alternating magnetic field (see Figs. 1 and 2). Although we are quite accustomed to using a constant magnetic field in an air core solenoid to remagnetize a ferromagnet, it is puzzling that we…

The authors indicate that several recent textbooks in quantum chemistry use a discussion of the excited states of the helium atom to demonstrate the importance of the Pauli principle in determining electronic repulsions. They present data suggesting "Pauli forces" do not keep electrons of parallel spins separated in space. (RH)

Communication is often thought to be a language problem. In reality, it is not so much words as commonality of background and value systems that make communication possible. Scientists need to improve their communication with non-scientists. (Author/RH)

A historical analysis is given of the development in 1900 of the Lorentz transformation of coordinates and time, and of electric and magnetic field components. The earlier work of Voight is discussed. (RH)

This textbook is the teacher's manual for "Modern Science Series--Book III. Our Environment: How We Use and Control It." It suggests a method of attack for each chapter, presents some details of the technique in the handling of demonstrations, suggested experiments, and special problems, and supplies answers to every important question…

Presented are three theories of superconductivity: (1) the London theory; (2) the Bardeen, Cooper, Schrieffer (BCS) theory; and (3) the sudden-polarization theory. (RH)

Discusses ontogeny and phylogeny in Piaget's work, differences between Piagetian (constructivist) and Darwinian (selectionist) approaches, and problems associated with transposing conceptual systems from one field to another. (RH)

The intention behind this workshop is to summarise some of the research about the use of concept maps, concept circles, Gowin's Vee and similar metacognitive devices that enable outsiders to find out the individual's own understanding of particular concepts and the way in which these concepts are interlinked. There is research evidence to suggest…

This textbook is a science reader. Sections include: (1) Nature and Science (cause and effect, the laws of nature); (2) Material Objects: Mineral Bodies (states of water: ice, water, steam); (3) Material Objects: Living Bodies (living plants and living animals and their ability to grow); and (4) Immaterial Objects (mental phenomenon, psychology).

The evolution of the name information science is traced, and terminology of 39 definitions of the term is compared to find common concepts and its central topic of investigation. The comparison reveals no consensus as to what information science is. Informatics is suggested as a better term for the field. (62 references) (Author/SJ)