This note describes an inexpensive means for making high resolution analog voltage measurements using the parallel printer port of a standard IBM PC or compatible. (PR)

Laboratory schools, triads, and teacher centers are among the professional development school (PDS) antecedents discussed in this article. Goodlad and Holmes Group PDS-related proposals, PDS elements, potential problems, and future prospects are also discussed. (IAH)

A survey and observations of 18 Montreal teachers attempting to integrate computers into the prescribed elementary school curriculum examined inservice training, resources, organization and scheduling of the computer laboratory, laboratory use and activities, and teacher and student reactions. Overall, the teachers were pleased with the…

Considers the role of the writing center within the context of a large writing program. Describes how the adoption of a portfolio system of grading at the University of Southern California focused attention on this issue. Narrates the changes brought about by the adoption of a portfolio assessment system. (HB)

Describes a student project for building a laboratory balance. (PR)

Presents the plans for y-suspension, coupled, and double pendula and explains in detail why they move as they do. The mathematics that describes the motion is examined. (DDR)

Describes student work in collecting data about the Fresh Kills landfill in Staten Island and how their research contributed to the decision to close the landfill. Includes discussion of research into other trash alternatives for the area. (DDR)

Presents an analogy used in introductory college chemistry to help students understand the procedure for determining the percentage purity of sodium carbonate. Employs a monetary analogy. (DDR)

Presents three experiments to introduce students to different kinds of chromatography: (1) paper chromatography; (2) gel filtration chromatography; and (3) reverse-phase liquid chromatography. Written in the form of a laboratory manual, explanations of each of the techniques, materials needed, procedures, and a glossary are included. (PVD)

Argues that procedural understanding--or the "know-how" of science--is a key issue in employment but one that is not easily identified. When questioned about the science they use in their work, employers and employees tend to refer to traditional scientific concepts and find it difficult to describe the procedural knowledge required in…

Presents the rigor mortis process in brook charr (Salvelinus fontinalis) as a tool for better understanding skeletal muscle metabolism. Describes an activity that demonstrates how rigor mortis is related to the post-mortem decrease of muscular glycogen and ATP, how glycogen degradation produces lactic acid that lowers muscle pH, and how…

Documents the collaborative coordination of multiple resources--talk, gesture, and writing--as represented in the interaction among three high school seniors working on a physics laboratory task. Through close analysis of the moment-to-moment construction of task, the study draws attention to complex yet taken-for-granted practices that are…

Discusses the merits of the Spectrum Techniques gamma spectroscopy system as used by university students to determine the mass-energy of an electron from measurements of the energies of Compton-scattered gammas. (WRM)

States that after a qualitative survey of participating instructors suggested the success of an in-class tutoring program at the open-admissions Kingsborough Community College, a quantitative survey compared the writing performance of students served by the program and those who were not. Indicates the program's success--more of those tutored…

Uses density to engage students in making quantitative observations that conflict with qualitative observations. Encourages discussion of the discrepancy thereby providing a natural means for student self-assessment and reflection. (DDR)