Thad Crews, Jeff Butterfield. Using technology to bring abstract concepts into focus: A programming case study. J. Computing in Higher Education, 13(2):25-50, 2002. [doi]
@article{CrewsB02,
title = {Using technology to bring abstract concepts into focus: A programming case study},
author = {Thad Crews and Jeff Butterfield},
year = {2002},
doi = {10.1007/BF02940964},
url = {http://dx.doi.org/10.1007/BF02940964},
researchr = {https://researchr.org/publication/CrewsB02},
cites = {0},
citedby = {0},
journal = {J. Computing in Higher Education},
volume = {13},
number = {2},
pages = {25-50},
}