@article{Posthuma_2012, title={Mathematics teachers� reflective practice and the quality of their instruction.}, volume={31}, url={http://satnt.ac.za/index.php/satnt/article/view/259}, DOI={10.4102/satnt.v31i1.365}, number={1}, journal={Suid-Afrikaans Tydskrif vir Natuurwetenskap en Tegnologie / <i>South African Journal of Science and Technology</i&gt;}, author={Posthuma, A.}, year={2012}, month={Nov.}, pages={8 bladsye} }