“…It is also key to increasing learning outcomes (Asfiah et al, 2013;Suprapti & Susanti, 2015). Based on its form, teaching material can be divided into print, audio, visual, audio-visual, and multimedia teaching material (Asfiah et al, 2013;Pramana and Dewi, 2014;Amir et al, 2015;Daud and Rahmadana, 2015;Nisa' et al, 2015;Padmapriya, 2015;Suwarni, 2015;Panjaitan et al, 2019a;Panjaitan et al, 2019b;Panjaitan et al, 2019c;Panjaitan et al, 2019d).…”