000 a
001 10632
011 _a1863-9690
090 _a10632
099 _tSER
100 _a20190528 frey50
101 _aeng
102 _aXD
200 _aZDM Mathematics Education
_eIdentity in Mathematical Education
_fEditor in chief : Gabriele Kaiser
_gGuest Editors: Mellony Graven, Einat Heyt-Metzunayim
207 _aVolum 51 Issue 3 -- June 2019
210 _aHeidelberg
_cSpringer
_d2019
215 _ap.361-564
_d27cm.