This project adopts the action research method to evaluate the effectiveness of environmental education activities focused on plant dyeing for indigenous elementary school students in Taiwan. Through site planning, instructional design, and course execution, the project involves in-depth observation and understanding of student behavior and responses during classes, with continuous adjustments for teaching methods. The project uses the Atayal Living Museum as the teaching site and collaborates with the local Lunpi Community Development Association and the nearby Datong Elementary School. We establish an environmental education facility based in the Lunpi community and develop suitable environmental education courses. We applied qualitative research methods such as data collection, analysis, and participant observation, along with quantitative methods like environmental education-related questionnaires to conduct this study. We focus on senior students at Datong Elementary School. The objective is to explore the effectiveness of environmental education courses in enhancing environmental literacy and to understand the students' thoughts and feelings during the course instruction. The action research at the Atayal Living Museum focuses on the Atayal tribe's plant dyeing techniques, complemented by instruction from handicraft teachers to highlight the museum's "Art and Humanities" features. During the implementation of the action plan courses, student behavior is observed, followed by another round of environmental literacy questionnaires and student feedback forms. The analysis includes research diaries, student learning worksheets, and feedback presentations, ultimately discussing the relationship between environmental education courses and environmental literacy.