Discusses questioning techniques and problem solving approaches for a sixth grade elementary school physical science activity using dry ice. Sequential steps of analysis and synthesis and supportive science demonstrations necessary for closure on Why" type questions are emphasized. (JM)

Describes purpose and use of elementary school earth science field instruction sites. Scientific concept and methodology objectives are given. General principles for earth science site model selection and implementation are discussed. Operationof site model program in New York City is explained. (JM)

Presents the procedures, results, and conclusions of a study designed to examine the efficacy of visual advance organizers for learning earth science concepts. (LC)

Presents some aspects of concept learning theory (what concepts are and how to analyze them) and proposes ways to improve the teaching of concepts in introductory chemistry courses. Emphasizes the lecture format, although ideas presented are applicable to other teaching methods. (Author/JN)

Because voltage is a difficult concept to comprehend, it is expected that textbook authors would be clear/consistent in their presentation. Presents 11 examples in which the concept is explained or used (taken from one book), suggesting that the presentation makes it difficult for students to develop an understanding of voltage. (JN)

Discusses various physics concepts/principles that can be illustrated by amusement park rides. Examples of rotational dynamics, energy conservation, acceleration, and others can be demonstrated by such rides as roller coasters, Ferris wheels, and a variety of rotating rides. (JN)

Investigated ideas used/favored by 40 California students (ages 8-12) who received little/no formal teaching about electric currents. Also investigated whether they were interested in or could discuss other childrens' ideas and whether they would change their ideas following exposure to experimental evidence that was at variance with these ideas.…

Discusses how the topic of spectral (Fourier) decomposition is introduced in a communications course at State University of New York (Stony Brook). Includes background information on this engineering concept (without focusing on calculus), how it is demonstrated, applications, and how the spectrum of a given signal can be measured. (JN)

Describes five stages of children's understanding about energy, reflecting an interaction between what they learn at school and their outside knowledge. Suggests a new approach for teaching the second law of energy, comparing it with the more traditional approach. (DC)

Discusses numerical solution of the one-dimension Schrodinger equation. A PASCAL computer program for the Apple II which performs the calculations is available from the authors. Also discusses quantization and perturbation theory using microcomputers, indicating benefits of using the addition of a perturbation term to harmonic oscillator as an…

Describes a computer program for Commodore PET (requiring 8K) which illustrates the statistical nature of entropy by providing a simple analogy. The analogy involves the distribution of objects free to move in a box divided into two compartments. A listing of program statements is also included. (JN)

The first of a two-part question asks: Does the total thrust of a rocket depend on the surrounding pressure? The answer to this question is provided, with accompanying diagrams of rockets. The second part of the question (and answer) are provided in v20 n7, p479, Oct 1982 of this journal. (Author/JN)

Reviews approximately 300 journal articles to point out fundamental problems resulting from the introduction of the quantity "amount of substance" and the use of the unit "mole." Proposals are made for the solution of these problems in the light of the IUPAC definition of the mole. (Author/CS)