On 24 July 2026, the YMCA for Northern Development Foundation, in collaboration with the Sanitation Engineering Division, Used Materials Environmental Management Section, Chiang Mai Municipality, organized a practical training workshop on “Household Organic Waste Management” for students from 11 schools under the Chiang Mai Municipality. The Foundation organized a series of interactive learning stations to encourage students to actively participate and enjoy the activities.

The learning activities were divided into five stations:

Station 1: Waste Reduction through the 1A3Rs Concept Students learned about the 1A3Rs approach—Avoid, Reduce, Reuse, and Recycle—and practiced waste segregation to help reduce environmental problems.

Station 2: Eat to Change the World Students learned about making responsible food choices by considering their impacts on health, communities, and the environment.

Station 3: Hands-on Leaf Composting Students practiced making leaf compost using a no-turn composting method, which helps reduce the need for burning and consequently reduces smoke and air pollution.

Station 4: Making Natural Fermented Liquid from Kaffir Lime Students learned how to make fermented liquid from kaffir lime, which can be used to produce dishwashing liquid, multipurpose cleaning solutions, and natural pest repellents.

Station 5: Bingo Game and Waste Management Learning Students enjoyed a Bingo game while learning about effective waste management and had the opportunity to win prizes through this creative activity.

As part of the training, students completed a pre-test and post-test to assess their learning outcomes. The activities helped students understand the importance of waste segregation and the basic principles of waste management, which are essential for reducing the amount of waste generated. Through hands-on practice in making fermented liquid and leaf compost, students also gained practical knowledge and skills that they can apply in their daily lives, both at home and at school, contributing to sustainable waste reduction in the future.