It is thought that the results of teaching some of the subjects in science through outdoor education will be more positive. The purpose of this study is to find out the effects of activities done through outdoor education on students' academic achievement, students' thoughts about the activities and the permanence of information. Mixed research design was used in the study. Academic achievement test was prepared to collect quantitative data while a test consisting of open-ended questions in fully structured interview form was prepared for qualitative data. For the analysis of quantitative data, statistical analysis techniques such as average, frequency, percentage, standard deviation and Wilcoxon signed ranks test were used with the help of SPSS program. In qualitative analysis, the data were coded, common themes were formed with their categories and content analysis method was used. According to the results, it was found that outdoor activities increased students' achievement and did not have a significant relationship with students' recalling information. The results of the qualitative analysis showed that the students liked these activities and the activities were effective in understanding the subject and learning the concepts. In addition, it was found that the activities influenced the friendship between students positively. It was suggested for outdoor activities to be used in science teaching.