Development of E-Modules Based on Teaching Factory in Chemistry Subjects in Vocational Secondary Schools

This research aims to develop a Teaching Factory-based e-module for chemistry subjects in Vocational High Schools (SMK), focusing on the competencies of chemical reactions and stoichiometry. The research follows the ADDIE development model, which includes five stages: analysis, design, development, implementation, and evaluation. In the validation phase, the e-module was assessed by experts in three areas: media, material, and language. The results showed validity scores of 92, 92, and 90%, respectively, indicating that the e-module was of very good quality. For the practicality test, teachers rated the e-module at 94%, small groups of students at 98%, and large groups of students at 93%, all falling within the very practical category. The effectiveness was tested using pretest-posttest and project-based assessments. The average pretest score was 60, while the average posttest score increased to 85, with a statistically significant improvement (p < 0.05). In the project assessment, 53% of students received very good, 33% Good, and 14% Medium ratings. This research contributes to the development of suitable learning media for the Teaching Factory model in vocational schools, promoting active learning in chemistry.