The aroma volatile compounds in tomatoes are strongly linked to taste and flavor. Commercial tomato varieties, however, generally lack flavor. Tomato breeding programs have therefore started to focus on increasing the flavor-enhancing volatiles, which can be more easily altered than the sugar content. Analytical efforts that identify key flavor…

During the pandemic caused by SARS-CoV-2 (COVID-19), a paper analytical device (PAD) was proposed as a tool for remote laboratory classes for undergraduate chemistry to teach calibration curve concepts. For this experiment, students were taught how to prepare a PAD, calibrate standard solutions, construct a calibration curve, and treat data…

The current review examined modeling literature in top science education journals to better understand the pedagogical functions of modeling instruction reported over the last decade. Additionally, the review sought to understand the extent to which different modeling pedagogies were employed, the discursive acts that were identified as important,…

Reviews the Hafele-Keating experiment on relativistic changes in eastward and westward moving cesium atomic clocks. Recommends the use of the Sagnac effect to remove the east-west time asymmetry and of the general-relativistic effect to elucidate the clock-rate changes. (CC)

In a senior modern physics laboratory, design" or ingenuity" experiments were introduced to acquaint students with methods of doing complete experiments. The former deals with proposed long term studies while the latter deals with apparatus and short term actual studies. Students rated the design" experiments higher. (Author/TS)

Describes an applied physics course which has been taught at Liverpool Polytechnic in the United Kingdom. Objectives, experimental work and assessment of the course are included. (HM)

Presents the results of the evaluation of a self-paced freshman physics laboratory and its assessment procedures used in the first-year physics course at the University of Adelaide, South Australia. (HM)

Describes a physical science course for nonscience majors developed at California State University, Fullerton, to teach some of the basic principles and methodology of chemistry and physics using current environmental problems to stimulate students' interest. (HM)

Describes a college course that provides a challenging learning experience in science based upon famous experiments and observations dating from the time of Aristotle to the present day. Presents information concerning (1) the course organization, structure, laboratory development, and expectations; (2) course content by quarter; (3) evaluation of…

Describes a programed, independent study, college level, general chemistry course designed to develop good technical laboratory skills with no attempt made to relate laboratory experiments and classroom topics. A list of experiments used and a sample laboratory examination are included. (BT)