Developing analytical exposition reading materials on healthy life for the student of nursing assistant study program of vocational high school

This study aimed to develop valid, appropriate, and potentially effective analytical exposition reading materials on healthy living for tenth-grade students. This study was conducted based on development research, which consists of four phases: analysis, design, evaluation, and revision. The data were gathered via questionnaires, semi-structured interviews, and a reading comprehension test. The data were quantitatively and qualitatively analyzed. A formative evaluation was conducted to ascertain the reading materials' validity, practicality, and potential impact. The result of the validity reading materials was a very high validity of 4.54 when assessed by content, instructional design, and media experts. Then, the result of the reading materials' practicality was very high in one-on-one (4.23) and small group (4.05) evaluations. The field test result was 85.57%, indicating that the generated reading materials had a high potential impact. As a result, the developed reading resources might be utilized as supplements to teach English reading material to tenth-grade students.