Siu Cheung Kong, Lam-for Kwok. A cognitive tool for teaching the addition/subtraction of common fractions: a model of affordances. Computers & Education, 45(2):245-265, 2005. [doi]
@article{KongK05-0,
title = {A cognitive tool for teaching the addition/subtraction of common fractions: a model of affordances},
author = {Siu Cheung Kong and Lam-for Kwok},
year = {2005},
doi = {10.1016/j.compedu.2004.12.002},
url = {http://dx.doi.org/10.1016/j.compedu.2004.12.002},
tags = {teaching},
researchr = {https://researchr.org/publication/KongK05-0},
cites = {0},
citedby = {0},
journal = {Computers & Education},
volume = {45},
number = {2},
pages = {245-265},
}