The purpose of this study was to investigate how findings in science education findings play a key role in the improvement of science lessons for secondary school students. Japanese university students created a science lesson on tomography for Singapore students as part of the TWINCLE program. We investigated the change of lesson plans, PowerPoint slides, teaching materials and worksheets on the topic of tomographic visualization before and after the lesson with our Singapore counterparts. The

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... results of this study show three key points: 1. The process of improvement of the science lesson became a form of active learning for the university students. 2. The university students' lesson plans and teaching materials were revised according to the context so as to find the location of blood clots present in blood vessels. 3. The revised hands-on activity exposed secondary school students to a more "authentic" application of the concept of tomography.