“…We found five studies employing objective measures such as tests, grades, task completion rates, or quizzes to evaluate student learning outcomes (i.e., Coetzee, Fox, Hearst, & Hartmann, 2014;Dominguez et al, 2013;Hakulinen, Auvinen, & Korhonen, 2013;Ibanez, Di-Serio, & Delgado-Kloos, 2014;Li, Grossman, Fitzmaurice, 2012). Out of these five, only three studies employed comparison-based design such as experimental-control research method (i.e., Coetzee et al, 2014, Dominguez et al, 2013Hakulinen et al, 2013).…”