E-STUDENT WORKSHEET BASED ON QR CODE ASSEMBLR EDU: THE DEVELOPMENT OF GEOGRAPHY LEARNING SOURCE IN THE ERA OF DIGITALIZATION

<span>One of the challenges in using student worksheets lies in their limited visual appeal, minimal interactivity, unclear instructions, and lack of technological integration, all of which fail to promote higher-order thinking skills and consequently reduce the effectiveness of learning and its relevance to contemporary students’ needs. This study aims to develop electronic student worksheets (e-student worksheets) based on the Assemblr Edu QR code that are valid and practical for students. This research employs the ADDIE model, which comprises five stages: analysis, design, development, implementation, and evaluation. The selection of the Research and Development (R&D) method was based on the need to design, validate, and produce a feasible digital learning product that aligns with the demands of technological innovation in the geography learning process. The study involved 184 Grade X students of SMAN 8 Banjarmasin, with data collected through observations and questionnaires. The research instruments included validation and product-effectiveness sheets. Validation was conducted by experts in materials, language, and media/learning technology, while teachers and students implemented effectiveness testing. The developed QR Code–based Assemblr Edu LKPD obtained material validation of 90.90% (very feasible), language validation of 95% (very feasible), and media/technology validation of 95.83% (very feasible). Product effectiveness reached 95.29% from teachers (very feasible) and 78.02% from students (feasible). These results indicate that the QR Code–based Assemblr Edu LKPD is highly appropriate for use in learning, particularly in geography instruction. </span>