Date: 12 November 2019
Topic: Filtration Column
Dr Ng Chi Yung, Stephen Associate Professor, Department of Physics, The University of Hong Kong
Dr Cheang Chi Chiu, Frank Associate Professor, Department of Science and Environmental Studies, The Education University of Hong Kong
Parents and Teachers from other schools
To compare the water purifying ability of a filtration column made with fine sand to that of one made with coarse sand.
Students were provided a chance to make their own filtration column made with different sands. Through the scaffolding of teachers, students designed their own experiment to solve a problem. They acquired skills in scientific investigation and doing experiments. This topic is also related to the social issue - water resources.