Girnat, Boris, Gerda Hagenauer, and Tina Hascher. “The Relationship Between Student Motivation and Mathematics Achievement in the Assessment of Basic Competencies (ÜGK) 2016”. Swiss Journal of Educational Research 42, no. 2 (October 14, 2020): 414–438. Accessed April 25, 2024. https://sjer.ch/article/view/5539.