Abstract
Abstract This research is the development of a SETS-Based Respiratory Textbook, using a mixed method of the investigation model, which collects qualitative data, then constructs a SETS-Based Respiratory Book design that is ready to be validated. The subject in this study was a SETS-Based Respiratory Textbook that could improve the representation ability of eighth grade students of junior high school. Whereas the respondents were Science Subjects (IPA) teachers who were incorporated in the Consultative Assembly for Science Subjects (MGMP) in Central District of Jember Regency and students of class VIII of SMP. Data collection techniques using observation, questionnaires, tests, and documentation. Research data explained qualitatively. The purpose of this study is to find out whether SETS-based books can be validated from the appropriateness of their contents. The results showed that the SETS-Based Respiratory Textbook contained the phenomenon of the Respiratory System; and has a specific writing pattern, which has a sequence of chapter titles, sub-chapter titles, description of material, sample questions, and ability test questions, and bibliography.