“…Nonetheless, a research on scientific literacy in the primary school level is limited on instructional intervention (Lee et al, 2005), the use of robotics (Cejka, 2006), the use of integrated approach (Cervetti et al, 2012), STEM learning (Rochman et al, 2019;, Guided experiments book based on SETS (Prasasti & Listiani, 2019), and the water cycle theme (Sujana et al, 2019). Whereas, researches about critical thinking in science learning of primary school level are on the implementation of Evocation, Realization of meaning, and Reflection step (Florea & Hurjui, 2015), Science Writing Heuristic approach in fifth grade (Hand et al, 2018), the implementation of digital game-based learning in fifth grade (Hussein & Ow, 2019), RADEC model in fourth grade (Satria & Sopandi, 2019), topic of water cycle in fifth grade (Syaodih et al, 2019), problem-based learning (Zuryanty et al, 2019), Lectora Inspire media assisted guided inquiry method in fifth grade (Reffiane et al, 2019), as well as STEM in fifth grade (Elfrida et al, 2019). Those various researches also become a basic that the aspect of critical thinking can already be developed and investigated on the high classes of primary school (fourth to sixth grade).…”