Donert, Karl Desmidt, Fien De Lázaro y Torres, Maria Luisa De Miguel González, Rafael Pablo Lindner-Fally, Michaela Parkinson, Alan Prodan, Diana Woloszynska-Wisniewska, Elzbieta Zwartjes, Luc The GI-Learner Approach: Learning Lines for Geospatial Thinking in Secondary Schools GI Forum ... 10.1553/giscience2016_02_s134 2016 2016