The present paper offers a competency-based approach to evaluate high school laboratory skills during a chemistry course. The "Secretaría de Educación Pública" (Mexico's Ministry of Education) has identified experimental sciences specific competencies that are to be established in high school. This study investigated the following…

Thin-layer chromatography (TLC) is one of the basic analytical procedures in chemistry and allows the demonstration of various chemical principles in an educational setting. An often-overlooked aspect of TLC is the capability to quantify isolated target compounds in an unknown sample. Here, we present a suitable route to implement quantitative…

The ability to develop, use, and refine models of experimental systems is a nationally recognized learning outcome for undergraduate physics lab courses. However, no assessments of students' model-based reasoning exist for upper-division labs. This study is the first step toward development of modeling assessments for optics and electronics labs.…

Many science educators have been incorporating the use of case studies into their teaching. An advantage of using minicase studies is that they can be used at any time throughout the semester to reinforce important topics covered without having to sacrifice a large amount of class time. In this article, the authors present a series of 10 mini-case…

In an article in this journal, it was shown that air resistance could never be a significant source of error in typical free-fall experiments in introductory physics laboratories. Since projectile motion is the two-dimensional version of the free-fall experiment and usually follows the former experiment in such laboratories, it seemed natural to…

A new experiment based on phase inversion of Pickering emulsions was carried out in a physical chemistry course. The emulsions were stabilized by surfactant-modified SiO[subscript 2] particles. As the concentration of surfactant increased, the emulsions changed from oil-in-water type (O/W) to water-in-oil type (W/O) type, and then reverted to be…

The purpose of this study was to examine the histopathologic reliability of embalmed cadaveric tissue taken from the gross anatomy laboratory. Tissue samples from hearts, livers, lungs, and kidneys were collected after the medical students' dissection course was completed. All of the cadavers were embalmed in a formalin-based fixative solution.…

An understanding of buffers is important in a variety of chemistry subdisciplines, with relevant applications to the life sciences and health profession-related fields. Here, we describe the development and implementation of a lab that involves creating a buffer solution using baby wipes and deionized water. The goal of this lab was to emphasize a…

Due to the wide and the ever-increasing strategic applications of quantum chemistry in chemical industries, it is important to introduce chemical engineering students to illustrative case studies that deploy molecular modeling in the design of reactors and derivation of thermochemical functions. Herein, we demonstrate how quantum chemical…

Purpose: The purpose of this study was to identify whether post-resistance exercise (REx) blood flow restriction (BFR) can elicit a similar acute training stimulus to that offered by either heavy REx or traditional low-load BFR REx. Method: Ten men completed trials with 30% one-repetition maximum (1RM) for 5 sets of 15 repetitions without BFR…

Purpose of this study is to determine whether there is a difference between the VO[subscript 2]max values in field and laboratory test. 96 students, studying at the Sports Academy of Sports Sciences and Technology of the Pamukkale University, have participated to the study on voluntary basis. While during the field test, the 12-minutes Cooper test…

A low-cost solar simulator using a LCD projector as a light source has been developed and tested successfully. The prepared simulator has an illumination spectral at the visible light region and is controllable using a computer. The prepared simulator with controllable spectral filter was used to utilize the current-voltage (I-V) measurement for…

This article explores how knowledge of institutional ecologies can help build connections across departments of large universities without direct communication. The authors, an instructor and a writing center tutor, consider "inventive collaboration"--impromptu work mediated by student writing--as a way to improve a multilingual…

This study focuses on how the quality of students' arguments and their conceptions of data and evidence change as a result of experiencing two types of laboratory courses, one employing a scripted inquiry approach and the other employing argument-driven inquiry. The analysis explores the connections between students' conceptions of data and…

The aim of this study is to determine the trend of studies in the laboratory and put the current situation in Turkey. For this purpose, document analysis technique, one of the qualitative research methods, was used in the research. The data group of the research consists of thesis studies on laboratories in our country between 1999-2017. Theses in…