In the new general education program, STEM education plays an extremely important role, STEM education creates opportunities for students to mobilize knowledge and skills in the fields of science, technology, and engineering. and mathematics to solve practical problems. Thereby contributing to the formation and development of the quality and capacity of learners. This article refers to the design and organization of teaching the STEM topic “Earthquake Warning Device” of Mechanical waves – Physics 11 in order to develop students’ problem-solving ability.