Impact of outdoor learning by step Introduction, Exploration, and Interpretation (IEI) based on environment on students' critical thinking

Research on development of IEI (Introduction, Exploration, and Interpretation) learning model for Natural Science base on conservation area in Bengkulu University has been conducted. The purpose of this study was to describe the impact of IEI learning model on students' critical thinking skill. Research and Development method was conducted. It included four stages of activities: (1) The needs of analysis, (2) observation a learning resource from the ecological aspects of conservation area, and (3) instructional design based on conservation area for secondary school students. 15 students from secondary school at Bengkulu city and 15 students from secondary school at a district of Bengkulu province were involved in this study. A fifth indicator of critical thinking was used to describe the impact of IEI on students' critical thinking skill, include: giving simple explanation, identification, translation, constructing argument, giving conclusion. The results show 56.7% students have critical thinking skill. There is no significant difference of critical thinking skill between students from district and capital city. There is also no significant difference based on gender. Allegedly, each step of IEI supports student's critical thinking skill. It can be concluded that IEI have a positive impact on critical thinking skills.