Development of a PjBL-STEM General Chemistry Module Integrated with Electroplating for Redox and Electrolysis

Redox reactions and electrolysis are complex chemistry topics that require teaching materials capable of connecting chemical concepts with contextual chemical phenomena. This study aimed to develop a PjBL-STEM-based general chemistry teaching module integrating an electroplating experiment for redox and electrolysis topics and to determine its validity and practicality. This study employed a Research and Development (R&D) approach using a modified 4D model consisting of three stages: define, design, and develop. Data were collected using validation questionnaires administered to subject-matter and media experts, as well as a student response questionnaire. The validation data were analyzed using Aiken’s V, while the student responses were analyzed based on the practicality percentage. The results showed that the Aiken’s V values obtained from the subject-matter and media experts were 0.903 and 0.874, respectively, both of which were categorized as high validity. The practicality assessment yielded an overall percentage of 87.5%, categorized as very practical. Therefore, the developed module is suitable for use as supplementary teaching material in General Chemistry learning on redox and electrolysis topics.