“…For example, two studies examined how mobile learning systems were designed to help activate learners' relevant prior knowledge (Song et al, 2012) or automatically link to pre-requisite information (CP3.1; Hwang, Tsai, et al, 2012). Aligned to CP3.2, some adaptive learning systems were able to provide functions such as underlining, drawing on figures (Arroyo et al, 2014), and highlighting text with varying colours (Siddique et al, 2018) Abawi, 2015;Admiraal et al, 2020;Alcoholado et al, 2011;Basham et al, 2016;Kim et al, 2019;Looi et al, 2009;MartĂn-SanJosĂ© et al, 2014;McCarthy, Liu, & Schauer, 2020;Phan, 2020;Phillips et al, 2020;Schmid & Petko, 2019;Song et al, 2012;Tsybulsky, 2020); Provide autonomy in improvisation to create meaningful contexts (Looi et al, 2009); Allow student to choose which mathematical task topics based on interest (Clinton & Walkington, 2019;HĂžgheim & Reber, 2015); Incorporate learner-selected vocabulary into learning content (Choi & Ma, 2015); Allow for customization of online learning texts with choice background colour, picture, font style (Ertem, 2013) Siddique et al, 2018;Standen et al, 2020;Su et al, 2006;Troussas et al, 2020;Tseng et al, 2008;Wang et al, 2020); Learning systems automatically return exercises that are slightly more difficult than the student's current understanding level (Cornelisz & van Klaveren, 2018) or items/learning activities that students need additional practices (Wang, 2014;Wongwatkit et al, 2020;You et al, 2019) Virtual Reality: Customize learning path with which students can interact constantly (Bhattacharjee et al, 20...…”