Fögele, Janis, Rainer Mehren, and Armin Rempfler. “Tipping Points – Key to a Deep Understanding of Complex Dynamic Systems by Learners?”. Journal of Geography Education 48, no. 3 (November 17, 2020): 83–100. Accessed April 2, 2026. https://zgd-journal.de/index.php/zgd/article/view/42.