Abstract: Wood, with its complex microstructure and special mechanical properties, holds a pivotal position in the education of materials mechanics. It not only serves as a valuable subject matter but also motivates students to comprehensively grasp the fundamental principles of this field. Recognizing this potential, the teacher initiated an extracurricular teaching enhancement through a wooden beam bending experiment. After teachers select the type of wood and cross-sectional size, the students are asked to build wooden beams with appropriate spans, use items at hand to construct loading and measuring devices, and independently complete the experiment. The Teachers evaluate the quality of experimental design based on independence, accuracy of results, and novelty of methods, and guide students to conduct experimental error analysis by combining basic assumptions of material mechanics and wood properties. Through this teaching expansion, the expected goal of improving students' knowledge structure and optimizing their abilities can be achieved.