Ulusoy Fadime2024-03-222024-03-222013http://www.iconte.org/FileUpload/ks59689/File/4._iconte_bildiri_ozetleriii.pdfhttps://hdl.handle.net/20.500.12597/23871https://creativecommons.org/licenses/by-nc-sa/4.0/An İnvestigation Of The Concept Of Variable İn Turkish Elementary Mathematics Teachers GuidebooksConference Proceedings