Development of mobile apps to support flipped-project based learning to improve high school student's critical thinking.

The Project Based Learning (PjBL) model can be integrated with Flipped Classroom; both of these combinations will provide meaningful learning for students. One of the technologies that can support Flipped-Project Based Learning is a mobile app which is named "IOXO" because it is more practical and interesting so that students can learn independently outside the classroom. The theme of the problem in the mobile apps is related to the pollution of the Lekso River due to cow dung waste. This research uses the Lee & Owen development model, which consists of analysis, design, development, implementation and evaluation stages. Trial and implementation carried out at Senior High School 1 Kesamben. The instruments used in the research were material expert validation sheets, media teaching materials sheets, biology education practitioners sheets, readability sheets for trial and student response questionnaires. The types of data in this research are quantitative and qualitative. Quantitative data were obtained from the results of the validity of material experts, teaching materials media experts, biology education practitioners, trials, and practicality from student response questionnaires. Qualitative data were obtained from suggestions and comments from material experts, teaching materials media experts, biology education practitioners, and students. The results of the validation of mobile apps from material experts, media experts, and biology education practitioners obtained values of 100%, 98%, and 98%. Meanwhile, from the results of student questionnaires after using the mobile apps, 90% of students stated that the application was very practical. From the results of individual trials, small groups and large groups respectively obtained values of 98%, 96%, and 96%. Thus, it can be concluded that the "IOXO" mobile apps are valid and practical to support learning on the topic of ecosystems and environmental change in high school. [ABSTRACT FROM AUTHOR]