“…We have found computer-based learning environments that use the handwriting or sketch-based methods as the data input to improve the learning of the students for a variety of domains, such as music theory (Barreto et al, 2016), physics (Cheema and LaViola, 2012;Lee et al, 2012;Cheema and LaViola Jr., 2018), Japanese kanji writing , drawing techniques (Dixon et al, 2010;Cummmings et al, 2012), mathematics (Laviola, 2007;Anthony et al, 2007a;Vuong et al, 2010;Anthony et al, 2012;Pacheco-Venegas et al, 2015;Phon-Amnuaisuk et al, 2015;Wang et al, 2016), biology , essentials of writing (Thompson et al, 2016), engineering statics concepts (Valentine et al, 2015), freehand engineering sketching (Hilton et al, 2019), digital circuit design (Alvarado et al, 2015), and geometry (Kang et al, 2016(Kang et al, , 2017. From this set of works, we have selected only the papers that are more similar to the research goal of our work and the domain of equations solving.…”