This investigation aims to develop an interactive e-module chemistry magazine-based teaching material based on Kvisoft Flipbook Maker on thermochemistry for Senior High School grade XI/MA level. The research design is a development research (Research and Development) with Plomp's model. The object of the research is the e-module inter-addictive…

Purpose: This study reports on the effectiveness of using animated computer graphics to teach submicroscopic level science to secondary school (Form One) students. Method: A total of fifty-three secondary school (Form One) students of average spatial ability were selected to participate in this study. Three topics involving concepts at the…

This paper entitled as "Impact of E-Content on Learning Chemistry at Higher Secondary Level" is tried to test the impact of the multimedia courseware in studying chemistry at the XI standard level by picking a sample of 40 students by containing 20 each with control and experimental group by adopting pre-test and post-test control group…

The comparative analysis of different meanings of Chemistry is carried out, taking in account philosophical, didactic, psychological and socio-cultural aspects. The issue is discussed in terms of the concurrent existence of two different subsystems referred both to Science and Education which can be found in presentations of chemistry knowledge.…

Besides measures of students' performances, a valid assessment of students' efficiency in a teaching process should also include measures of invested mental effort. The research presented herein covers several approaches in measuring students' mental effort including 5, 7 and 9-point Likert type scales, time on task, as well as eye tracking…

This research deals with students' abilities to read chemistry textbook images about dispersed systems. Secondary school students were included as the research participants, and their abilities to propose the titles of the realistic, conventional, and hybrid textbook images about dispersed systems, were analyzed. Additionally, their written…

Inquiry activities with component visualization tools are increasingly prevalent in K-12 STEM classrooms; however, evidence of their efficacy has primarily been collected from controlled laboratory studies that lack ecological validity or from small-scale classroom interventions that assess learning outcomes proximal to the intervention. Here, the…

Inquiry activities with component visualization tools are increasingly prevalent in K-12 STEM classrooms; however, evidence of their efficacy has primarily been collected from controlled laboratory studies that lack ecological validity or from small-scale classroom interventions that assess learning outcomes proximal to the intervention. Here, the…

In a technology-enhanced learning environment and underpinned by a unique hybrid pedagogic model that borrows from gamification, constructivism, and experiential learning approaches, badges were purposefully used to foster engagement. This approach promoted the development of a mindset that identifies and appreciates the worth of a portfolio of…

For the least-squares analysis of data having multiple uncertain variables, the generally accepted best solution comes from minimizing the sum of weighted squared residuals over all uncertain variables, with, for example, weights in x[subscript i] taken as inversely proportional to the variance [delta][subscript xi][superscript 2]. A complication…

Determination of the relationship between individuals' cognitive styles and cognitive structure outcomes was the main aim of this study. Sixty-six participants were enrolled in the study and their cognitive styles were determined by using the Hidden Figure Test (for their field dependent/independent dimension of cognitive style) and the…

Glyphosate (N-(phosphonomethyl)glycine) is the most widely used herbicide on earth. A simple assay to quantify glyphosate concentrations in environmental samples was developed as part of an interdisciplinary effort linking introductory laboratory courses in chemistry, biology, and microbiology. In this 3 h laboratory experiment, students used…

Students collect magnetic susceptibility data to verify that Hund's rule correctly predicts electronic configurations. Systems examined include three commercially available lanthanide(III)-containing complexes of the form M(acac)[subscript 3](H[subscript 2]O)[subscript 2] (where M = La(III), Nd(III), and Gd(III), and acac denotes the [CH[subscript…

This article describes an ongoing initiative of the Department of Chemistry (Chem. Dept.) at the University of Minnesota (UMN) to support the mental health of graduate students. With the increasing pressure on students to carry out novel research, publish articles, learn a broad range of skills, and look for career opportunities, the levels of…

A reference electrode is an essential component of all three-electrode electrochemical measurements. Common commercial reference electrodes, including the saturated calomel electrode and Ag/AgCl reference electrode, are expensive with the former containing toxic mercury. Cheaper alternatives have been proposed including Ag/AgCl references made…