Bacteria have developed a cell-to-cell communication system called quorum sensing (QS), allowing them to regulate group behavior and synchronize the expression of virulence factors, responsible for increasing their infection capacity and resistance to antimicrobials. Although the control of microbial infections through the inhibition of microbial…

In undergraduate science education, laboratory courses stand as essential cornerstones of experiential learning. Chemistry laboratory courses offer students unique hands-on experiences that bridge the gap between theoretical knowledge and practical application. The journey through the undergraduate chemistry curriculum is paved with a series of…

In many Western countries, non-formal education has become increasingly recognized as a valuable addition to the traditional educational system. In recent years, a special form of non-formal student laboratories (Schülerlabor) has emerged in Germany to promote primary and secondary practical science learning. This paper describes a developmental…

The purpose of this study was to develop a scoring rubric to assess students' manipulation skills and identify students' learning difficulties in conducting organic chemistry experiments. In constructing the scoring rubric, we first analyzed the skills needed in the experiment, then divided the skills into subskills, and finally…

An evidence centered design approach was used to develop, implement, and assess a novel and innovative digital pipetting badge using Purdue's Passport system. Each student in a large lecture course created a video demonstrating how to use a 10 mL pipet to dispense liquid. The video was uploaded into the Passport system, which allowed instructors…

In delivering chemistry courses by distance, a key challenge is to offer the learner an authentic and meaningful laboratory experience that still provides the rigour required to continue on in science. To satisfy this need, two distance general chemistry laboratory courses appropriate for Bachelor of Science (B.Sc.) students, including chemistry…

In an effort to achieve high success in knowledge and technique acquisition as a whole, a biochemistry and molecular biology experiment was established for high-grade biotechnology specialty students after they had studied essential theory and received proper technique training. The experiment was based on cloning and expression of alkaline…

A student evaluation system is described that maximizes characteristics of formative evaluation, uses multiple forms of assessment to evaluate competency, and provides timely and detailed feedback and opportunities for remediation. Student and faculty opinions of the program have been positive. (Author/MSE)

Examined generalizability of social-skills and social-anxiety global ratings made by judges trained in six different experimental laboratories. Found moderate degrees of generalizability across laboratories for the social-skills and social-anxiety ratings based on brief role plays. For more extended interaction, obtained moderate generalizability…

This manual provides a set of tasks for use in the microteaching context of a Teaching Laboratory to be used in teaching pupils an approach to problem solving. The introduction describes the contents and functioning of the Teaching Laboratory and the way in which the manual should be used. Details of five lessons are then given. The first lesson…

SEVERAL STUDIES OF LABORATORY TRAINING PROGRAMS IN INDUSTRY ARE ASSESSED IN TERMS OF THEIR POTENTIAL USEFULNESS (DO THEY ACCOMPLISH INTENDED CHANGES IN PARTICIPANTS THAT ARE LASTING OR SELF-REINFORCING, AND HOW DO THEY COMPARE WITH OTHER METHODS IN ACCOMPLISHING SIMILAR GOALS) AND ACTUAL CONTRIBUTION (DOES PARTICIPATION LEAD TO LASTING CHANGE IN…

There is a demand for engineers to understand the manufacture of semiconductor devices and how this knowledge can be applied to systems design. (IR)

Describes a laboratory pretest giving samples of laboratory competencies, such as observing, interpreting, and calculating. Information from the test is related to student background and to overall success in the course. A test copy and tabulated data are included. (EB)

Describes tutoring experiences provided for senior methods students with college freshmen in composition and short story courses at Colorado State University, Fort Collins. (RD)

Reviews several specific ways in which office practice simulations can be measured and evaluated, including the salary theory; evaluation of ability to establish priorities and make decisions; evaluation of work produced; and publisher evaluations. (LRA)