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Eshetu Desalegn Alemneh; Dereje Andargie Kidanmariam; Solomon Melesse Mengistie; Belete Bedemo Beyene – Journal of Technology and Science Education, 2024
The study aimed to investigate the effect of computer simulation and animation-integrated instruction on preservice science teacher trainees' conceptual understanding and retention of acid-base chemistry and stoichiometry. A quantitative approach with a pretest-posttest-delayed test quasi-experimental design was used. In the study area, there were…
Descriptors: Computer Simulation, Animation, Preservice Teachers, Preservice Teacher Education
James A. Ciaccio; Baran Ak; Kareem Hassan – Journal of Chemical Education, 2023
The pharmacologically active lignans sesamin and sesamolin are minor components of sesame oil and ingredients in OTC dietary supplement capsules. We report an introductory undergraduate organic laboratory experiment combining natural product isolation and spectral analysis in which students isolate a mixture of sesamin and sesamolin by either (1)…
Descriptors: Undergraduate Students, Chemistry, Science Instruction, Organic Chemistry
Ravera, Mauro; Nucera, Alessandro; Gabano, Elisabetta – Journal of Chemical Education, 2022
This is an easy and inexpensive laboratory experiment in which undergraduate students at the Bachelor's degree level in Chemistry can measure formation constants of complexes [Ni(en)[subscript n](OH[subscript 2])[subscript 6-2n]][superscript 2]+ (n = 1, 2 or 3; en = ethylenediamine) through an acid-base titration. The background information…
Descriptors: Laboratory Experiments, Color, College Science, Science Instruction
Brayan Diaz; Arie Aizman – Chemistry Education Research and Practice, 2024
The paper presents the design and evaluation of a voluntary online introductory stoichiometry (VOIS) course aimed at facilitating the transition from secondary to higher education. The course utilized simple analogies and adaptive feedback through a formative scaffolding assessment. The study assessed the effectiveness of the VOIS course through…
Descriptors: Stoichiometry, Chemistry, Science Instruction, Online Courses
Wallen, Scott L.; Dhau, Jaspreet; Green, Robert; Wemple, Laura B.; Kelly, Troy, Jr.; Collins, Brent – Journal of Chemical Education, 2020
Over the past decade the Accreditation Board for Engineering and Technology, Inc. (ABET) has changed the general chemistry requirements to include a single introductory course for most engineering majors. There is a focus on outcomes that equip students with the ability to pass the Fundamentals of Engineering (FE) Exam and to work in…
Descriptors: Chemistry, Introductory Courses, Hands on Science, Laboratory Experiments
Pablo Serna-Gallén; Maria Fortuño-Morte; Héctor Beltrán-Mir; Eloísa Cordoncillo – Journal of Chemical Education, 2022
This article presents and discusses the results of an educational innovation that seeks to introduce the world of molecular gastronomy in chemistry lessons as a means to review stoichiometry and offer an alternative way to learn. In the literature to date, there is no evidence of haute cuisine having been employed to contextualize stoichiometry…
Descriptors: Chemistry, Science Instruction, Teaching Methods, Game Based Learning
Ralph, Vanessa R.; Lewis, Scott E. – Chemistry Education Research and Practice, 2019
Students who score within the bottom quartile on cognitive measures of math aptitude have been identified as at-risk for low performance in chemistry courses, with less attention as to "why" such differential performance persists. At-risk students struggle most differentially on assessment items related to the mole concept and…
Descriptors: At Risk Students, Chemistry, Science Achievement, Mathematics Skills
Alvarez-Montan~o, Victor E.; Farías, Mario H.; Brown, Francisco; Mun~oz-Palma, Iliana C.; Cubillas, Fernando; Castillon-Barraza, Felipe F. – Journal of Chemical Education, 2017
A good understanding of ternary phase diagrams is required to advance and/or to reproduce experimental research in solid-state and materials chemistry. The aim of this paper is to describe the solutions to problems that appear when studying or determining ternary phase diagrams. A brief description of the principal features shown in phase diagrams…
Descriptors: Science Instruction, College Science, Chemistry, Problem Solving
Gulacar, Ozcan; Tan, Alexandra; Cox, Charles T., Jr.; Bloomquist, Jennifer; Jimmy, Okechukwu; Cao, Nguyen – Education Sciences, 2019
To gauge the variability in expert problem-solving strategies for stoichiometry problems, a set of experts in different career tracks were studied with the cohort including 17 graduate students in chemistry, three college chemistry instructors, and seven college graduates working in the industry. The goal of the study was to determine whether…
Descriptors: Expertise, Problem Solving, Stoichiometry, Chemistry
Li, Manyu; Wang, Yu; Stone, Heather N.; Turki, Nadia – Education Sciences, 2021
The purpose of this randomized experimental study is to apply two socio-cognitive models to understand possible ways to improve students' learning outcomes in an online introductory chemistry learning environment. Specifically, the social presence theory suggested that students' sense of relatedness and learning motivation can be increased by a…
Descriptors: Introductory Courses, Chemistry, Science Instruction, Online Courses
Ralph, Vanessa Rosa; States, Nicole E.; Corrales, Adriana; Nguyen, Yvonne; Atkinson, Molly B. – Chemistry Education Research and Practice, 2022
Emphasizing stoichiometry appears to be a norm of introductory chemistry courses. In this longitudinal and mixed-methods study, we examined how the emphasis on stoichiometry in assessments of introductory chemistry impacted educational equity and student learning. Using quantitative methods, we identified mole and stoichiometric conversions as two…
Descriptors: Chemistry, Science Instruction, Equal Education, Introductory Courses
Miheso, Josephat M.; Mavhunga, Elizabeth – Chemistry Education Research and Practice, 2020
What evidence counts as teacher quality is a debate of continued interest to the teacher education community. Many education scholars have argued for the importance of retention of knowledge as an indicator of the quality of education acquired. This study explored the retention of the quality of planned Topic Specific Pedagogical Content Knowledge…
Descriptors: Pedagogical Content Knowledge, Beginning Teachers, Science Teachers, Secondary School Teachers
Chitiyo, George; Potter, Darek W.; Rezsnyak, Chad E. – Journal of Chemical Education, 2018
The "Atoms-First" approach has received considerable attention in the chemical education community over the past few years as an alternative to the standard reaction-based two-semester General Chemistry curriculum. The Atoms-First model emphasizes the electronic structure of the atom as a means to explain and rationalize chemical…
Descriptors: Chemistry, College Science, Nuclear Physics, Stoichiometry
Lou, Anna J.; Jaeggi, Susanne M. – Journal of Research in Science Teaching, 2020
There have been many practical obstacles for teachers to implement evidence-based educational technology, especially in STEM classrooms. By implementing learning principles related to Cognitive Load Theory, we developed an innovative Technology-Assisted Guided Learning (TAGL) approach and its web-based instructional tool, combining expertise from…
Descriptors: Prior Learning, Achievement Gap, Computer Assisted Instruction, Chemistry
Ralph, Vanessa R.; Lewis, Scott E. – Chemistry Education Research and Practice, 2018
The identification of students at risk for academic failure in undergraduate chemistry courses has been heavily addressed in the literature. Arguably one of the strongest and most well-supported predictors of undergraduate success in chemistry is the mathematics portion of the SAT (SAT-M), a college-entrance, standardized test administered by the…
Descriptors: Undergraduate Students, At Risk Students, Chemistry, Difficulty Level