As a field trip, I went to the "Kan Clean Center" that was just built in Hachioji last year. 15 minutes by bus from Takao Station. It is located in a green place. The facility is very clean and spacious, with modern systems for processing garbage. The facility information was available in various languages, so even foreigners could understand it. You can see trucks entering the facility and garbage being collected live. There were also separate quizzes, and the students were able to have a lot of fun learning.