1. Achmetli, K., Schukajlow, S., & Krug, A. (2014). Effects of prompting students to use multiple solution methods while solving real-world problems on students’ self-regulation. In C. Nicol, S. Oesterle, P. Liljedahl, D. Allan (Eds.), Proceedings of the Joint Meeting of PME 38 and PME-NA 36 (pp. 1–8). Vancouver, Canada: PME.
2. Baron, R. M., & Kenny, S. A. (1986). The moderator–mediator variable distinction in social psychological research: Conceptual, strategic, and statistical considerations. Journal of Personality and Social Psychology, 51(6), 1173–1182.
3. Bikner-Ahsbahs, A. (2004). Interest-dense situations and their mathematical valences. Contribution to the topic study group 24 on students’ motivations and attitudes towards mathematics and its study. In 10th International Congress for Mathematics Education. Copenhagen, Denmark. Retrieved from
http://www.math.uni-bremen.de/didaktik/ma/bikner/articles/article1.pdf
.
4. Blum, W., Galbraith, P. L., Henn, H.-W., & Niss, M. (2007). Modelling and applications in mathematics education. The 14th ICMI study. New York, NY: Springer.
5. Blum, W., & Leiss, D. (2007). How do students and teachers deal with mathematical modelling problems? The example sugarloaf and the DISUM project. In C. Haines, P. L. Galbraith, W. Blum, & S. Khan (Eds.), Mathematical modelling (ICTMA 12): Education, engineering and economics (pp. 222–231). Chichester, UK: Horwood.