EVALUATION OF THE EFFECTIVENESS OF AN ENVIRONMENTALLY FRIENDLY CHEMISTRY PRACTICUM GUIDE BASED ON GUIDED INQUIRY: THE EVALUATION STAGE OF THE ADDIE MODEL

Abstract

Evaluation is the final stage of the ADDIE development model, playing an essential role in assessing the effectiveness of the developed learning media. This study aims to evaluate the effectiveness of an environmentally friendly chemistry practicum guide based on guided inquiry, implemented with grade XI high school students. The assessment focused on three main aspects: learning outcomes, motivation, and students’ practicum activities. A quantitative approach with a quasi-experimental design was employed, involving two classes: the experimental class using the developed practicum guide and the control class using a conventional handbook. Instruments included pretest-posttest, motivation questionnaires, and student activity observation sheets. The results revealed that the experimental class achieved higher learning gains with an N-gain score of 66.7%, compared to 41.1% in the control class. Moreover, students’ motivation in the experimental class reached 88.8, significantly higher than the control class (50.15). Practicum activities were also more active in the experimental class (89.8) than in the control class (73.4). These findings indicate that the guided inquiry-based chemistry practicum guide is effective in improving students’ learning outcomes, motivation, and practicum activities.