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Direct linkLapanantnoppakhun, Somchai; Tengjaroensakul, Urai; Mungkornasawakul, Pitchaya; Puangpila, Chanida; Kittiwachana, Sila; Saengtempiam, Jeeraphithak; Hartwell, Supaporn Kradtap – Journal of Chemical Education, 2020
A green chemistry experiment is presented for teaching an undergraduate quantitative analysis/analytical chemistry laboratory class through the use of black tea leaf extract for the determination of iron in supplement tablets. Dried tea leaf is a safe, low cost, and widely available source of natural extract that can be used in place of more toxic…
Descriptors: Chemistry, Science Experiments, Spectroscopy, College Science
Liu, Xiufeng – Journal of Science Education and Technology, 2006
Based on current theories of chemistry learning, this study intends to test a hypothesis that computer modeling enhanced hands-on chemistry laboratories are more effective than hands-on laboratories or computer modeling laboratories alone in facilitating high school students' understanding of chemistry concepts. Thirty-three high school chemistry…
Descriptors: Laboratory Experiments, Hands on Science, Computer Simulation, Quasiexperimental Design
Roman, Harry T. – Tech Directions, 2004
Over the past 25 years, the author has had the opportunity to study the subject of solar energy and to get involved with the installation, operation, and testing of solar energy systems. His work has taken him all over the United States and put him in contact with solar experts from around the world. He has also had the good fortune of seeing some…
Descriptors: Energy, Energy Education, Power Technology, Hands on Science
