@article {MATHEDUC.06468337,
author = {Tsamir, Pessia and Tirosh, Dina and Levenson, Esther and Barkai, Ruthi and Tabach, Michal},
title = {Early-years teachers' concept images and concept definitions: triangles, circles, and cylinders.},
year = {2015},
journal = {ZDM. Mathematics Education},
volume = {47},
number = {3},
issn = {1863-9690},
pages = {497-509},
publisher = {Springer, Berlin/Heidelberg},
doi = {10.1007/s11858-014-0641-8},
abstract = {Summary: This study investigates practicing early-years teachers' concept images and concept definitions for triangles, circles, and cylinders. Teachers were requested to define each figure and then to identify various examples and non-examples of the figure. Teachers' use of correct and precise mathematical language and reference to critical and non-critical attributes was also investigated. Results indicated that, in general, teachers were able to identify examples and non-examples of triangles and define triangles, were able to identify examples and non-examples of circles but had difficulties defining circles, and had some difficulties in both identifying examples and non-examples of cylinders and defining cylinders. Possible reasons for these results are discussed.},
msc2010 = {G49xx (G29xx C39xx D79xx D39xx)},
identifier = {2015e.00646},
}