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Direct linkXu, Chunxiu; Lin, Wanqi; Cai, Longfei – Journal of Chemical Education, 2016
A demonstration is described of electrophoretic separation of carmine and sunset yellow with a paper-based device. The channel in the paper device was fabricated by hand with a wax pen. Electrophoretic separation of carmine and sunset yellow was achieved within a few minutes by applying potential on the channel using a simple and inexpensive power…
Descriptors: Science Instruction, Scientific Concepts, Chemistry, College Science
Koul, Anjni; Mehrotra, Alka – School Science Review, 2018
To improve the quality of education, it is important for teachers to have an understanding of action research. Action research is 'learning by doing', which involves identifying a problem, looking for a plan to resolve it, observing how successful it is and, if not satisfied, trying again. Action research helps educators to be more effective in…
Descriptors: Action Research, Problem Solving, Science Instruction, Demonstrations (Educational)
Ye, Jianqiang; Lu, Shanshan; Bi, Hualin – Chemistry Education Research and Practice, 2019
This study uses graphs of conductivity measured by a microcomputer-based laboratory (MBL) to promote students' macro, micro, and symbolic representations when learning about net ionic reactions (NIR). A total of 54 students, aged 14-15 years old participated in this research, and were randomly divided into an experimental group (N = 27) and a…
Descriptors: Science Instruction, Science Laboratories, Scientific Concepts, Concept Formation
