It is important for teachers to design and use mathematically accurate descriptions, explanations and justifications that are comprehensible and useful for students in the context of reflecting their mathematical knowledge for teaching. The purpose of this study is to examine a mathematics teacher’s mathematical knowledge for teaching function concept by investigating his use of mathematical descriptions, explanations and justifications. The study was conducted as a descriptive case study. The participant in the study was one mathematics teacher (Samet) who volunteered to join the research. Data was collected via observing and recording the teacher’s teaching of the function concept and survey of function concept. The results of the study revealed that the teacher mostly used mathematical descriptions in his teaching. This was followed by mathematical explanations, and mathematical justifications. The teacher’s use of mathematical descriptions, explanations and justifications and his sufficiency at using these varied according to cases. Results indicated some deficiencies in the teacher’s mathematical knowledge for teaching.
Primary Language  en 

Subjects  Education and Educational Research 
Journal Section  Articles 
Authors 

Dates 
Publication Date : October 3, 2019 
Bibtex  @research article { akukeg478101,
journal = {Kuramsal Eğitimbilim Dergisi},
issn = {13081659},
eissn = {13081659},
address = {Eğitim Fakültesi, Eğitim 1 Binası, ANS Kampusu, 03200 / Afyonkarahisar},
publisher = {Afyon Kocatepe University},
year = {2019},
volume = {12},
pages = {1284  1305},
doi = {10.30831/akukeg.478101},
title = {Mathematics Teachers' Use of Mathematical Descriptions, Explanations and Justifications: The Case of Samet},
key = {cite},
author = {TATAROĞLUTAŞDAN, Berna}
} 
APA  TATAROĞLUTAŞDAN, B . (2019). Mathematics Teachers' Use of Mathematical Descriptions, Explanations and Justifications: The Case of Samet. Kuramsal Eğitimbilim Dergisi , 12 (4) , 12841305 . DOI: 10.30831/akukeg.478101 
MLA  TATAROĞLUTAŞDAN, B . "Mathematics Teachers' Use of Mathematical Descriptions, Explanations and Justifications: The Case of Samet". Kuramsal Eğitimbilim Dergisi 12 (2019 ): 12841305 <https://dergipark.org.tr/en/pub/akukeg/issue/47391/478101> 
Chicago  TATAROĞLUTAŞDAN, B . "Mathematics Teachers' Use of Mathematical Descriptions, Explanations and Justifications: The Case of Samet". Kuramsal Eğitimbilim Dergisi 12 (2019 ): 12841305 
RIS  TY  JOUR T1  Mathematics Teachers' Use of Mathematical Descriptions, Explanations and Justifications: The Case of Samet AU  Berna TATAROĞLUTAŞDAN Y1  2019 PY  2019 N1  doi: 10.30831/akukeg.478101 DO  10.30831/akukeg.478101 T2  Kuramsal Eğitimbilim Dergisi JF  Journal JO  JOR SP  1284 EP  1305 VL  12 IS  4 SN  1308165913081659 M3  doi: 10.30831/akukeg.478101 UR  https://doi.org/10.30831/akukeg.478101 Y2  2019 ER  
EndNote  %0 Kuramsal Eğitimbilim Dergisi Mathematics Teachers' Use of Mathematical Descriptions, Explanations and Justifications: The Case of Samet %A Berna TATAROĞLUTAŞDAN %T Mathematics Teachers' Use of Mathematical Descriptions, Explanations and Justifications: The Case of Samet %D 2019 %J Kuramsal Eğitimbilim Dergisi %P 1308165913081659 %V 12 %N 4 %R doi: 10.30831/akukeg.478101 %U 10.30831/akukeg.478101 
ISNAD  TATAROĞLUTAŞDAN, Berna . "Mathematics Teachers' Use of Mathematical Descriptions, Explanations and Justifications: The Case of Samet". Kuramsal Eğitimbilim Dergisi 12 / 4 (October 2019): 12841305 . https://doi.org/10.30831/akukeg.478101 
AMA  TATAROĞLUTAŞDAN B . Mathematics Teachers' Use of Mathematical Descriptions, Explanations and Justifications: The Case of Samet. Kuramsal Eğitimbilim Dergisi. 2019; 12(4): 12841305. 
Vancouver  TATAROĞLUTAŞDAN B . Mathematics Teachers' Use of Mathematical Descriptions, Explanations and Justifications: The Case of Samet. Kuramsal Eğitimbilim Dergisi. 2019; 12(4): 13051284. 