Saksri Supasorn. Development and evaluation of interactive multimedia learning tools in undergraduate chemistry : caffeine extraction simulated experiment and NMR spectroscopy web-based learning course. Doctoral Degree(Science and Technology Education). Mahidol University. : Mahidol University, 2008.
Development and evaluation of interactive multimedia learning tools in undergraduate chemistry : caffeine extraction simulated experiment and NMR spectroscopy web-based learning course
Abstract:
Two multimedia learning tools, an interactive caffeine extraction simulated experiment (ICESE), and an interactive NMR spectroscopy web-based learning course (INMR) were developed and validated based on constructivist learning environments to support students learning. These multimedia learning tools can be one of the most effective means to improve both students understanding of key chemistry concepts. The ICESE was used as a pre-laboratory exercise to help students improve their understanding and mental models of caffeine extraction. Effects of the ICESE and levels of spatial ability on students understanding and mental models were discussed. Alternative conceptions expressed in mental models prior and after interacting with the ICESE were investigated. The findings from the study have implications for chemistry instructors and suggest that performing an experiment might not be enough to help students understand important concepts at the microscopic level. Chemistry instructors might consider using a simulation, or other visualization tools, to help students connect these concepts to the corresponding macroscopic procedural steps. The INMR course was used as a supplement parallel with studying in a regular class on NMR spectroscopy to help students improve their NMR understanding and problem solving skills. Effects of the INMR course on students understanding of key concepts of NMR spectroscopy were identified. The findings from the study have implications for chemistry instructors and indicate that learning in a meaningful context, and problem-based learning, can help students to develop their higher-order cognitive skills. Once students have HOCS, they will develop their ability to solve open-ended problems which is often necessary in NMR spectroscopy"