Background and Objectives

In order to educate the next generation on how to recycle the water resources, and strengthen their understanding on recycled water, WSD introduces “Project-based Learning: Recycled Water” to enable students understand how science and technological advancements to shape a better environment and conserve water.

Activity Details

Activity 1 - What is Recycled Water?

  1. Complete a project learning with the theme of “recycled water”. Before completing the project worksheet, students are suggested to conduct a research on topics to enhance understanding. Students can use the websites provided in the References or find materials on their own.
  2. Elaborate on each component of the project, including:
    1. what is recycled water;
    2. types of recycled water;
    3. benefits and limitations of using recycled water;
    4. global examples of using recycled water; and
    5. how to make use of recycled water from the perspective of individuals, families and schools.
  3. In the project, students can use the websites provided in the References or other websites for research, and present the information illustrated with the help of text and images.

Activity 2 - Be a Water-conscientious Farmer

  1. Divide the students into two groups. One group of students grows mung bean sprout with normal fresh water, while other group of students use recycled water. (Teachers can choose use another type of plants)
  2. Observe the growth of bean sprout. Students can use a ruler to measure the height of the bean sprout and record the sprout’s growth with written text or images.
  3. After two weeks, students can bring the bean sprouts or the photos of plants back to school. They can compare the sprouts grown with normal fresh water to those with recycled water, and discuss the differences and uses of recycled water. Students are encouraged to use more recycled water in their daily lives.

Activity 3 - Rainwater Harvesting Workshop at School

  1. Teachers can make reference to different types of handmade rainwater harvesting system through the photos and links provided in the References and guide students how to design their own one.
  2. After designing the rainwater harvesting systems, students (mainly Primary 5 and 6 students) can try to develop the rainwater harvesting system based on their design with assistance of teachers.
  3. After the production of rainwater harvesting system, teachers and students can test the effectiveness of the product together and discuss the difficulties they encounter during the process and how they overcome.
  4. Use the collected rainwater to clean the basketball court and playground, or to water the plants in school or in the school greenhouse. As the rainwater has not been sterilised, it should not be used to clean the classrooms.
Teaching Resources