A simple tea infuser is obtained and been used as a container for the dry ice to simulate the effect from high-density dry ice. The tea infuser is a simple, low cost device to allow instructors with access to dry ice makers to effectively use the interesting demonstration.

An HPLC and a UV-visible spectrophotometer are identified as instruments that helps to incorporate more biologically-relevant experiments into the course, in order to increase the students understanding of selected biochemistry topics and enhances their ability to apply an analytical approach to biochemical problems. The experiment teaches…

Heavy faculty teaching loads and limited funds biology teachers designed certain objectives in order to increase the understandability of the subject matter of the laboratory exercises they write. In relation to these objectives an old "cookbook" laboratory exercise on yeast fermentation is introduced which involve students asking questions,…

A novel instrumental-digestion technique using pressure-assisted chelating extraction (PACE), for undergraduate laboratory is reported. This procedure is used for exposing students to safe sample-preparation techniques, for correlating wet-chemical methods with modern instrumental analysis and comparing the performance of PACE with conventional…

Laboratory-based practical exercises, which are an important and time-consuming part of many science degree courses, may be directed towards a variety of learning objectives. Some of these have traditionally been assessed by staff marking the student's written account of the laboratory experiment (the laboratory write-up) but increasing student…

Purpose: The aim of this work is to implement bootstrapping methods into software tools, based on Java. Design/methodology/approach: This paper presents a category of software e-tools aimed at simulating laboratory works and experiments. Findings: Both students and teaching staff use traditional statistical methods to infer the truth from sample…

A useful metrics system for the assessment of the environmental impact of chemical processes is utilized to illustrate several of the principles of green chemistry. The use of this metrics system in conjunction with laboratory experiments in green chemistry would provide for reinforcement in both the theory and practice of green chemistry.

The National Research Council's (NRC, 2005) publication "America's Lab Report: Investigations in High School Science" provided the impetus for this study. In the NRC report, the experiences of high school students nationally are described along with recommendations for improving and supporting these experiences. Since the NRC report was…

A common undergraduate chemical engineering experiment has been modified for on-line operation over the Internet. By adopting rapidly changing Internet and object component technologies, we developed a novel approach combining the Internet and regular laboratory equipment. The client-server applications use a Visual Basic and Labtech programming…

Bacterial conjugation is a genetic transfer that involves cell-to-cell between donor and recipient cells. With the current method used to teach students in genetic courses at the undergraduate level, the transconjugants are identified using bacterial physiology and/or antibiotic resistance. Using physiology, however, is difficult for both…

Presents the results of educational experiments aimed at incorporating APL programming techniques in an undergraduate physical-analytical laboratory course. Included are a list of first year experiments and some examples of operations. (CC)

Discusses implementation and advantages of take-home experiments, including three respective examples in acoustics, magnetism, and optics. The activities can be categorized into demonstration experiments, see-what-you-can-find-out'' experiments, and experiments requiring preparatory class discussion or written directions. (CC)