One innovation that can be developed based on the problem learning angle created is the movement of line marching skills as learning media alternatives for students. This study aims to determine the effectiveness of using the Gebar Modules. The sample comprised 30 students from grades 4A and 4B who were randomly selected with one-group pre-test-post-test design. The result showed that the designed module is feasible to use. First, the data show that the N-gain coefficient is 0.77, which indicates the module's effectiveness on student-learning outcomes. Another data collection showed that 82% of the students could use a bow properly and 62% of the students can perform drill movements with the appropriate rules. In conclusion, this module makes students not only observe the things that shape the angle but also those that give them an angular shape by themselves so the material is etched deeper in their memory.