In view of the increasing amount of marine debris, environmental issues were mentioned in the "Life and Environment" unit in the fifth social studies class. In addition, Penghu County has vigorously promoted beach cleaning activities in recent years, so we want children to actually participate in beach cleaning-discovery Problem - looking for creative materials - creating three-dimensional works; in conjunction with the craft courses in the five visual arts courses, let the children use sea waste to create an island, and also think about how the people on the island treat the island.