Future studies should explore whether students who are instructed to use different mathematical
solution methods to solve given modelling problems (e.g., Pythagoras’ theorem or scale
drawing to the Fire-brigade problem) improve in their performance. The first analysis of
prompting this kind of multiple solutions to modelling problems with regard to the topic linear
functions was conducted for students’ self-regulation and did not reveal any positive effects
(Achmetli, Schukajlow, & Krug, 2014). The investigation of different kinds of solutions that can
be used to solve modelling problems can contribute to our knowledge about multiple solutions
and provide information about how to enhance students’ ability to solve these kinds of problems