香港有多少個水塘? 哪個花灑最節約用水? 除了在課堂上學習知識，常識科老師早前帶領四年級學生到水知園參觀，讓學生親身經歷香港制水，觀察不同家居用品的用水量等，學習就是快樂、滿足的。
How many reservoirs are there in Hong Kong? Which sprinkler is the most water-efficient? In addition to learning knowledge in the classroom, the General Studies teacher recently took fourth-grade students to visit the H2OPE CENTRE to allow them to personally experience Hong Kong's water supply and observe the water usage of different household items. Learning is joyful and fulfilling.