David Molina-Garcia is graduated in Mathematics and in Computer Engineering (Autonomous U. of Madrid, 2010), PhD in Mathematics (U. of Castilla-La Mancha, 2015). Also, he is an Associate Professor (U. of Castilla-La Mancha, 2020) of Mathematics Education and researcher in Applied Mathematics, Computer Science and Didactics of Mathematics. He researches in Mathematical Oncology, focused on brain tumors, and in Mathematics Education, focused on Manipulative Materials to teach Algebra and Geometry.