“…Jiang (2014), Barnes and Gillis (2015), Martos-Garcia et al (2017), andElmahdi et al (2018) Improved understanding Baleni (2015), Barnes and Gillis (2015), Freeman and Tashner (2015), Dascalu et al (2017), Aycock et al (2018), Hansen and Ringdal (2018), and Bullock et al (2018) Useful and immediate feedback Baleni (2015), Cross and Palese (2015), Barnes and Gillis (2015), Keller (2017), Martos-Garcia et al (2017), Deeley (2018), Estaji and Mirzaii (2018), Hansen and Ringdal (2018), Srivastava et al (2018), Bullock et al (2018), and Mohamadi Zenouzagh (2019) Improved students' learning and scores Cross and Palese (2015), Elshami and Abdalla (2017), Hawe and Dixon (2017), Keller (2017), Deeley (2018), Elmahdi et al (2018), Estaji and Mirzaii (2018), Jamil et al (2018), Leiva et al (2018), Mohamadi (2018), Srivastava et al (2018), Bullock et al (2018)…”