Abstract: This article identifies the core issues of implementing STEM/STEAM education in high schools under the 2018 General Education Curriculum. It proposes the development of a structured STEM/STEAM instructional content system to support effective application in teaching practice. This approach aims to enhance students’ ability to apply knowledge to real-life situations, thereby improving learning outcomes and fostering the development of essential competencies. 

Keywords: Applying knowledge to life, competency development, high school students, STEM/STEAM teaching.