“…The decline of interest and engagement in science as well as growing need of skilled scientists have aroused concern in many Western countries (Osborne, Simon, & Collins, 2003;Vihma & Aksela, 2014). Non-formal, out-of-school education might help to engage young students to math and science (STEM) careers (Tolppanen, Vartiainen, Ikävalko, & Aksela, 2015;Vihma & Aksela, 2014) and understand scientific inquiry (Antink-Meyer, Bartos, Lederman, & Lederman, 2016). The development of non-formal education is also promoted by the European Union (European Union, 2015).…”