Validity of Student Worksheets Based on Model Argument Driven Inquiry Integrated by STEM to Train Students' Argumentation Ability and Self-Efficacy in Chemical Equilibrium Material

Objective: One of the teaching materials that can increase students' interest and learning motivation is student worksheet with an interesting model. This study aims to: (1) train argumentation abilities when they want to express their opinions regarding chemical equilibrium material (2) self-efficacy by bringing related material. Method: The research method refers 4D model, namely definition, design, development, deployment. However, it only limited third stage. data collection technique used validation three validators, two chemistry lecturers one high school teacher. instruments assess validity are content sheets construct sheets. obtained then processed using agreement percentage formula. Results: 1, 2, 3 feasible in terms construction very valid categories. evidenced value on each which above 75%. Novelty: modeled STEM-integrated ADI will be developed skills self-efficacy. novelty assessed as being able provide: solutions ideas material, especially sub-factors shifting factors towards confidence conveying or other actions.