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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
Wenyu Lai; Baolin Li – Journal of Chemical Education, 2025
Paal--Knorr reactions are a classical method for synthesizing pyrroles, using 1,4-dicarbonyl compound and amine as reactants. It has the characteristics of green chemistry, as only two molecules of water are lost. In this teaching and learning experiment, 2,5-hexanedione and 4-"tert"-butylaniline were used to synthesize…
Descriptors: Organic Chemistry, College Science, Environmental Education, Science Curriculum
Ângelo Luís; Fernanda Domingues – Biochemistry and Molecular Biology Education, 2025
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…
Descriptors: Inhibition, Evaluation Methods, Science Experiments, Microbiology
Yiting Lin; Yunqi Cai; Cheng Lian; Shouhong Xu; Wenqing Zhang; Honglai Liu – Journal of Chemical Education, 2025
Ion transport, involving the diffusion and migration of ions within the electrolyte, stands as a fundamental concept in electrochemistry and serves as the driving force for electrochemical reactions. Electric double layers are critical in the fields of electrochemical energy storage and chemical conversion, constituting a central focus of…
Descriptors: Chemistry, Science Instruction, Energy, Engineering
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
Isabel María Cruz Lorite – International Journal of Designs for Learning, 2025
Historical scientific controversies have great potential to address aspects of the nature of science in context. This paper describes a design case about a novel lesson plan based on the scientific controversy between Karl von Frisch and Carl von Hess on the sight of bees (how they see). This lesson plan allows concepts related to experimentation,…
Descriptors: Lesson Plans, Science Education, Entomology, Scientific Concepts
Jiraporn Poonyawatpornkul; Supranee Pitsamai; Onuma Methakesorn; Kotchakorn Mangmee – Journal of Learning for Development, 2025
This case study investigated the conceptual understanding of the Simple Pendulum topic amongst physics student-teachers using online experiments. A pre-experimental design was utilised, employing a one-group pretest-posttest approach with 20 student-teachers. The research instruments included a highspeed video activity conducted within Online…
Descriptors: Scientific Concepts, Motion, Physics, Preservice Teachers
Tadesse Hunegnaw; Tesfaye Demisse Hailegebreal; Dawit Asrat Getahun; Minaleshewa Atlabachew – European Journal of STEM Education, 2025
Even though physical experiments are mandatory in science education, there has been an increasing demand for virtual experiments. This research aimed to investigate the impact of virtual experiments compared to physical experiments on students' conceptual understanding of chemical kinetics concepts. To achieve this, a two-phase explanatory…
Descriptors: Science Experiments, Concept Formation, Scientific Concepts, Chemistry
Louise Castro de Jesus; Sophia Lincoln Cardoso de Azevedo; Rafaela Moraes Pereira de Sousa; Ana Beatriz Matos; Salim Kanaan; José Carlos Pelielo de Mattos; Lidia Maria Amorim – Journal of Biological Education, 2025
Isoenzymes are variant forms of the same enzyme activity that exhibits different tissue distribution. When cells are damaged, intracellular content leaks into the blood stream, making them potential biochemical markers. Undergraduate health sciences students are expected to interpret laboratory findings of serum levels of biochemical markers and…
Descriptors: Science Laboratories, Biochemistry, Health Sciences, Allied Health Occupations Education
Zydrick L. Avelino – Journal of Biological Education Indonesia (Jurnal Pendidikan Biologi Indonesia), 2025
The study focused on the development of a website that can be used in various fields of science in Junior High School. Particularly, topics that were utilized as part of the re-search report include chromosomes, DNA, and genes for grade 9 learners. This exploratory case study explored learners' engagement and performance on a developed virtual…
Descriptors: Foreign Countries, Web Sites, Science Instruction, Grade 9
Yan Wang; Peng He; Jinling Geng; Zhiwei Zhu – Journal of Chemical Education, 2025
This paper presents an innovative teaching approach that integrates photoelectric technology with analytical chemistry instruction through inquiry-based learning (IBL), using cerium as a selected analyte. With the advancement of science and technology, a strong foundation of basic knowledge and methodologies is crucial in analytical chemistry…
Descriptors: Instructional Innovation, Chemistry, Science Instruction, Active Learning
Brett Criswell; Kadir Demir; Michelle Zoss – Science Education, 2025
This qualitative case study delved into students' understanding and positioning while they participated in solving an authentic, conceptually-based problem in a high-school chemistry class. Verbal and nonverbal cues, particularly gestures, offered broader awareness of students' engagement in sensemaking during the learning experience. The…
Descriptors: High School Students, Chemistry, Science Instruction, Student Attitudes
Kanok-on Khampui; Kwanyuen Leamsamrong; Woottipong Rarat; Rattikan Sarnkong – Higher Education Studies, 2025
The purposes of this study were: To examine the effects of low-cost mini science experiment kits on Thai 6th graders' science learning achievement; To investigate how these kits impact Thai 6th graders' Science process skills; To explore their influence on Thai 6th graders' scientific mindset The participants were 111 sixth-grade students from…
Descriptors: Foreign Countries, Elementary School Students, Elementary School Science, Elementary School Teachers
Verena Petermann; Andreas Vorholzer; Claudia von Aufschnaiter – Journal of Research in Science Teaching, 2025
Science teachers' beliefs about teaching and learning are a vital component of teachers' professional competence and are often assumed to impact classroom practice. To date, these beliefs have been predominantly investigated regarding teaching and learning in general or for a particular science subject (e.g., physics). It remains to be determined…
Descriptors: Foreign Countries, Science Teachers, Science Education, Teacher Attitudes