The validation results show that e-workbook is valid, practical, and effective.
Limited trials were conducted on students in basic chemistry classes. This research is an ADDIE-based development research with analysis, design, development, implementation, and evaluation stages. This study aims to develop an interactive e-workbook based on PLTL (Peer-Led Team Learning) that meets the criteria of being valid, practical, and effective against collaboration and critical thinking skills. Collaboration skills are needed for students to develop collaborative and critical thinking as part of 21st century life skills. Many students struggle to understand chemistry because it is abstract, conceptual, and involves numerous mathematical operations.
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