This study aims to map the purposes, content and teaching approaches of science teaching aimed at schoolchildren aged 6-12 years outside the regular school setting, as described in previous research. The findings are based on a systematic search in four databases and three journals, resulting in the selection of 51 articles based on specific inclusion criteria. These articles were analyzed thematically through content analysis based on the didactic questions of why, what, and how. The findings indicate that the mapped articles highlight several purposes, contents, and teaching approaches. The purposes involve increasing interest in science, developing students' ability to act in everyday life and society, increasing knowledge and skills, promoting careers in science or academic success, and reaching other aims not directly related to science. The teaching includes contents such as scientific phenomena and concepts, nature of science and scientific processes, and socio-scientific issues. The approaches of teaching vary from being mostly teacher-led, mostly student-led to being both teacher- and student-led.