“…Researchers have shown that students almost always experience negative emotions in mathematical settings, e.g., anxiety, anger, hopelessness, shame, boredom, frustration, concern and nervousness (Ahmed et al, 2013;Goetz, Haag, Lipnevitch, Keller et al, 2014;Op't Eynde, De Corte, & Mercken, 2004). Since negative emotions impair academic achievement, it is of great importance to help students regulate them, that is, to "influence which emotions they have, when they have them, and how they experience and express these emotions" (Gross, 1998: p. 275).…”