Described are the design, construction, and uses of two pieces of laboratory equipment. Included are a multipurpose meter, "Calo-pH Meter," and a device for collecting water samples for determining dissolved oxygen content. (CW)

Described is an investigation of the contributions of genes and environment to a quantitative character using readily available varieties of dwarf beans. Included are a list of materials, typical results, and a student instruction sheet. (CW)

Explores the power transfer using (1) a simple electric circuit consisting of a power source with internal resistance; (2) two different mechanical systems (gravity driven and constant force driven); (3) ecological examples; and (4) a linear motor. (YP)

Describes an aircart upon which a person can sit. Discusses the construction and use of it in a physics class. (YP)

Equipment and procedures for simple astrophotography are discussed. Sample photographs are provided. Suggested are several uses of the slides and the techniques for teaching astronomy. (CW)

Discusses a group project for a physics laboratory using various pendulums. Presents diagrams of pendulums, describes how to make a pendulum, and provides suggestions for guiding students in the laboratory. (YP)

Presents a mechanics problem illustrating that Newton's second law and the linear conservation of momentum principle must be used in an inertial reference frame. Provides an analysis of the problem. (YP)

The 422 Presidential Science Honorees (1980-86) participated in a Delphi study composed of two surveys regarding their professional reading patterns including science education journals, general education journals, science indexes, and general education indexes. Demographic information about the respondents is provided. (Author/YP)

Describes the physics displays at the University of Canterbury (New Zealand), including the facility, static displays, and interactive displays. Discusses the basic philosophy, general principles, and evaluation of the displays. (YP)

Discusses a heavy-duty KBr press that will allow undergraduate students to prepare KBr windows in room-temperature conditions. Described are the essential components and the procedures for the KBr window preparation. (YP)

Listed are the 19 artificial elements and the meanings of the terms "natural" and "artificial" when applied to elements are discussed. Describes some commercial uses of each. (YP)

Discusses a tutorial slide package for oscilloscope operation. Provides source address and price for obtaining it. (YP)

Examines the reading level and potential comprehension level of 10 fourth-grade science textbooks. Reports that there is a great deal of variability between and within the science texts. (YP)

Presents an activity to construct a tester for electrical resistors. Contains discussion questions, extensions, curriculum correlations to health and art, and home links. Includes a reproducible student worksheet. (MKR)

Describes the history, construction, and use of a diffusion cloud chamber to detect and study radioactive materials. (MKR)