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Carmel, Justin H.; Herrington, Deborah G.; Posey, Lynmarie A.; Ward, Joseph S.; Pollock, Amy M.; Cooper, Melanie M. – Journal of Chemical Education, 2019
Over the past 20 years research on reform efforts aimed at the chemistry laboratory has focused on different aspects of students' experiences including increasing content knowledge, improving student attitudes toward chemistry, incorporating inquiry activities, and providing students a hands-on experience related to the chemistry concepts learned…
Descriptors: Chemistry, Science Instruction, Teaching Methods, Educational Change
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Lumetta, Gregg J.; Arcia, Edgar – Journal of Chemical Education, 2016
A novel smartphone microscope can be used to observe the dissolution and crystallization of sodium chloride at a microscopic level. Observation of these seemingly simple phenomena through the microscope at 100× magnification can actually reveal some surprising behavior. These experiments offer the opportunity to discuss some basic concepts such as…
Descriptors: Investigations, Handheld Devices, Laboratory Equipment, Physical Sciences
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Kuntzleman, Thomas S. – Journal of Chemical Education, 2015
An activity is described wherein students observe dynamic floating and sinking behavior of plastic pieces in various liquids. The liquids and solids are all contained within a plastic bottle; the entire assembly is called a "density bottle". After completing a series of experiments that guides students to think about the relative…
Descriptors: Science Activities, Scientific Concepts, Scientific Principles, Science Experiments
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Rayner-Canham, Geoff; Rayner-Canham, Marelene – Journal of Chemical Education, 2015
Though guided-inquiry learning, discovery learning, student-centered learning, and problem-based learning are commonly believed to be recent new approaches to the teaching of chemistry, in fact, the concept dates back to the late 19th century. Here, we will show that it was the British chemist, Henry Armstrong, who pioneered this technique,…
Descriptors: Inquiry, Science Instruction, Teaching Methods, Educational History