. 2021 Mar 24;9(1):e24170. doi: 10.2196/24170
©Mary Hassandra, Evangelos Galanis, Antonis Hatzigeorgiadis, Marios Goudas, Christos Mouzakidis, Eleni Maria Karathanasi, Niki Petridou, Magda Tsolaki, Paul Zikas, Giannis Evangelou, George Papagiannakis, George Bellis, Christos Kokkotis, Spyridon Rafail Panagiotopoulos, Giannis Giakas, Yannis Theodorakis. Originally published in JMIR Serious Games (http://games.jmir.org), 24.03.2021.
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Figure 2.
User selects the answer to the math calculation exercise.