Allen Leung. Dragging in a Dynamic Geometry Environment Through the Lens of Variation. Technology, Knowledge and Learning, 13(2):135-157, 2008. [doi]
@article{Leung08-2,
title = {Dragging in a Dynamic Geometry Environment Through the Lens of Variation},
author = {Allen Leung},
year = {2008},
doi = {10.1007/s10758-008-9130-x},
url = {https://doi.org/10.1007/s10758-008-9130-x},
researchr = {https://researchr.org/publication/Leung08-2},
cites = {0},
citedby = {0},
journal = {Technology, Knowledge and Learning},
volume = {13},
number = {2},
pages = {135-157},
}