Editing Limits (section)

===Modelling the tasks===
The authors suggest an activity to contrast the colloquial and mathematical meanings of "approaching".<ref name=":1">Riegler, P. (2021): [[:File:Limits-report.pdf|Analyse eines Interviews zu studentischen Schwierigkeiten mit Grenzwerten]]. unpublished report.</ref> With respect to the bottlenecks identified in the post-hoc analysis of the interview, they also suggest activities, for instance to help students recognize the difference between constructive and nonconstructive definitions and to recognize the nonconstructive nature in the case of limit.