@article{education2017521,
author={Voskoglou, Michael Gr.},
title={Managing the Uncertainty in the van Hiele Levels of Geometric Reasoning},
journal={American Journal of Educational Research},
volume={5},
number={2},
pages={109--113},
year={2017},
url={http://pubs.sciepub.com/education/5/2/1},
issn={2327-6150},
abstract={Student group total possibilistic uncertainty and probabilistic uncertainty are calculated for evaluating the student acquisition of the van Hiele levels of geometric reasoning and an example is presented illustrating our results.},
doi={10.12691/education-5-2-1}
publisher={Science and Education Publishing}
}