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Vimoshini Pragash; Meran Keshawa Ediriweera – Biochemistry and Molecular Biology Education, 2025
The Folch method is a commonly employed, simple biochemical procedure used to extract fat from food items and biological samples in biochemistry laboratories. The iodine number of fat reflects its degree of unsaturation. In the present study, the iodine number of fat extracted using the Folch method from cow milk, goat milk, chicken egg yolk and…
Descriptors: Biochemistry, Science Laboratories, Laboratory Procedures, Science Experiments
Jürgen Russ; Niels Hammer – Anatomical Sciences Education, 2025
This study describes the process of developing a high-impact, low-cost, and low-maintenance air ventilation system for anatomy facilities. It employed the strategic application of Value Engineering (VE), assuring that the air ventilation system meets contemporary threshold limit values (TLVs) for formaldehyde in the working zone of dissection…
Descriptors: Engineering, Anatomy, Science Laboratories, Laboratory Procedures
JonathanG. H. Stathakis; Jake A. Cravino; Ross Andrew Shalliker – Journal of Chemical Education, 2023
In today's global economy, the origin of the food we eat is becoming more and more difficult to identify. Verifying the authenticity of products to protect supply chains is a complicated problem that requires a multidisciplinary approach. Chemical authentication of foodstuffs often includes a mass spectrometer detector; however, they are costly…
Descriptors: Food, Chemistry, Science Instruction, Science Experiments
Tsun Hei Yu; Pin-Yuan Lian; Jhih-Yu Lin; Li-Yu Chou; Yan-Ru Chen; Chia-Chi Huang – Journal of Chemical Education, 2024
As a model study for improving undergraduate organic chemistry laboratories with contemporary research concepts and practices, we evaluated a project module aiming at the synthesis of two porphyrin compounds. The module was implemented in a format that differed in several ways from that of a traditional course. It was designed for small student…
Descriptors: Organic Chemistry, Science Instruction, Science Laboratories, Instructional Improvement
Sobiya Khursheed; Zahid Hussain; Aasiya Gul; Muhammad Aabid Shah; Afzal Hussain; Mohamed F. Alajmi; Prince Firdoos Iqbal; Nusrat Rashid; Rayees Ahmad Shiekh; Jahangir Ahmad Rather; Akhtar Hussain Malik; Waseem A. Wani – Journal of Chemical Education, 2024
Titration is an important experimental skill that every chemistry educator and learner must master. Titration is often the method of choice in the science laboratory courses in secondary and postsecondary schools. During acid-base titration, chemistry learners are always told about salt formation. However, a practical visualization of the salt…
Descriptors: Secondary School Science, Secondary School Students, Undergraduate Students, Chemistry
Adrian Saura-Sanmartin; Jorge Lopez-Sanchez; Carmen Lopez-Leonardo; Aurelia Pastor; Jose Berna – Journal of Chemical Education, 2023
The synthesis of a [2]rotaxane through three- or five-component coupling reactions has been adapted to an organic chemistry experiment for upper-division students. The experimental procedure addresses the search for the most favorable reaction conditions for the synthesis of the interlocked compound, which is obtained in a yield of up to 71%.…
Descriptors: Scientific Concepts, Organic Chemistry, Science Experiments, Spectroscopy
Jixin Wang; Wenshui Zhou; Yin Li; Mei Yu; Zheng Zhu – Journal of Chemical Education, 2024
By hosting a college students' laboratory skills contest, we provide an interesting activity for students to cultivate good laboratory practices and thereby improve their laboratory skills. The substance of this contest is the detection of the hardness of water, which involves numerous laboratory skills such as solution preparation, weight by…
Descriptors: Undergraduate Students, Chemistry, Science Instruction, Laboratory Experiments
Vuppala, Laxmi Sinduri; Vazquez, Timothy; Nguyen, Ding; Knowlton, Maverick; Smith, Emily; Evan-Nguyen, Theresa – Journal of Chemical Education, 2020
Exposure to real-life applications of quantitative analysis techniques based on two gas chromatography (GC) experiments was provided to a large cohort of sophomore-level students. In one experiment, students assessed blood alcohol content by internal standardization using a homemade headspace system similar to methods implemented in forensic…
Descriptors: Undergraduate Students, Laboratory Experiments, Science Experiments, Biochemistry
Tomas Shivolo; Hamza Omari Mokiwa – Journal of Education in Science, Environment and Health, 2024
Contemporary science teaching pedagogy in Namibia places a strong emphasis on fostering inquiry-based instruction and practical work in secondary school science education. In recent years, there has been a growing recognition of the need to move beyond traditional, rote-based methods towards more learner-centred approaches that encourage active…
Descriptors: Secondary School Teachers, Science Instruction, Teaching Methods, Instructional Design
Jichao Xue; Jiaxin Liu; Qingshu Yuan; Zhengwei Yao; Jin Xu; Zhigeng Pan – Education and Information Technologies, 2025
To optimize learning experience and improve learning performance, current virtual experimental systems usually assist students with stepwise guidance before operations and feedback after them. However, stepwise and excessive guidance can lead to student overreliance, while late feedback cannot avoid potential errors during experimental learning.…
Descriptors: College Students, Chemistry, Science Instruction, Science Experiments
Yuan, Min; Tang, Qun; Lu, Ying; Zhang, Zhong; Li, Xiao-Hui; Liu, Shu-Mei; Sun, Xiu-Wei; Liu, Shu-Xia – Journal of Chemical Education, 2019
An integrated and research-focused laboratory experiment is developed to introduce the "antenna effect" occurring in luminescent lanthanide complexes to students. Students synthesized a lanthanide metal-organic framework (Ln-MOF) with the formula of [Eu(BTPCA)(H O)]·2DMF·nH[Subscript 2]O (Eu-BTPCA, H[subscript 3]BTPCA =…
Descriptors: Undergraduate Students, Laboratory Experiments, Science Experiments, Chemistry
Betts, Thomas A.; Palkendo, Julie A. – Journal of Chemical Education, 2018
This laboratory experiment employs an innovative approach to introduce undergraduates to liquid chromatography-tandem mass spectrometry (LC-MS/MS) by developing a method based on multiple reaction monitoring (MRM). During this qualitative investigation, students operated a triple quadrupole mass spectrometer in the MS scan and product ion scan…
Descriptors: Undergraduate Students, Science Instruction, Science Laboratories, Laboratory Procedures
Michelle L. Kovarik; Betty Cristina Galarreta; Peter J. Mahon; Daniel A. McCurry; Aren E. Gerdon; Steven M. Collier; Marjorie E. Squires – Journal of Chemical Education, 2022
This article reports the results of a curriculum survey of 322 analytical chemistry instructors (92% U.S.-based) conducted during Spring 2021. This snapshot of current course formats, topics, and pedagogical methods will be useful to both seasoned and novice teachers of analytical chemistry. The majority of respondents reported that their major…
Descriptors: Chemistry, Science Instruction, Active Learning, Evidence Based Practice
Altunova, Nebi; Artun, Hüseyin – Journal of Science Learning, 2020
In this study, the Science Laboratory Applications (SLA) course given in a department of Elementary School Teaching in Turkey was evaluated for effectiveness. A triangulation research design, with mixed methods, was employed based on research data collected via a semi-structured interview form, a Science Experiments Evaluation Rubric (SEER)…
Descriptors: Preservice Teacher Education, Teacher Education Curriculum, Elementary School Science, Science Laboratories
Hadiati, Soka; Kuswanto, Heru; Rosana, Dadan; Pramuda, Adi – International Journal of Instruction, 2019
This study aims to examine students' reasoning based on the model in each laboratory work style and find the effect on scientific attitude and student activity. This study uses a quantitative approach with the experimental method. The study was conducted in three classes with different lab work styles. Arduino and sensors were used as a…
Descriptors: Logical Thinking, Scientific Attitudes, Laboratory Procedures, Open Source Technology