The most important agricultural product in Shetou is guava. In addition to the planting area in the township ranking first in the country, many school parents are also closely related to the guava industry. In the previous school year, the first phase of the course implementation of "Guava Matters" was carried out. The main content was to understand the growth of the guava tree and use the leaves to create poems and paintings. This semester, the course will be extended, with the same theme of guava and the five senses as the starting point. Starting from the taste of guava, it will be combined with the content of global warming and resource recycling to let students understand the use of school resource recycling stations and the use of the tasted food. The guava seeds remain. Then, the recycled PET bottles were painted and used as potted plants to create a guava seed potted plant. They observed the process of growing from seeds to trees, and learned about the use of resources and items around us to recycle them. In addition to revitalizing them, they can also use fruits after daily consumption. Seeds, planting plants, planting multiple trees to slow down the rate of global warming, and finally learning to sing and create environmentally friendly songs. I went home to share the first potted plant and song in school with my parents, and also shared it with the whole school.