\input zb-basic \input zb-matheduc \iteman{ZMATH 2012b.00686} \itemau{\v Zilkov\'a, Katar\'\i na} \itemti{Convex quadrilaterals and their properties in the training of teachers for primary education.} \itemso{Acta Didact. Univ. Comen., Math., No. 11, 73-84 (2011).} \itemab Summary: The article describes the problems involved in the math training of teachers for primary education. The topic involves the correct identification of convex polygons with focus on convex quadrilaterals and on the development of the skills required to sort them on the basis of their properties. The article lists the potential sources of problems and the options available to eliminate these through various modelling techniques. \itemrv{~} \itemcc{G29 G49 B50 C32} \itemut{quadrilaterals; polygons; identification; classification; plane geometry; primary teacher education; tests; educational research} \itemli{} \end