Ulusoy, F2023-04-182023-04-182021.01.011571-0068https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=dspace_ku&SrcAuth=WosAPI&KeyUT=WOS:000539545000002&DestLinkType=FullRecord&DestApp=WOShttps://hdl.handle.net/20.500.12597/10485Prospective Early Childhood and Elementary School Mathematics Teachers' Concept Images and Concept Definitions of TrianglesArticle10.1007/s10763-020-10105-6WOS:000539545000002105710781951573-1774