@article{betz_five_1967,
	title = {Five {Decades} of {Mathematical} {Reform}— {Evaluation} and {Challenge}},
	volume = {43},
	issn = {0025-5769, 2330-0582},
	url = {https://pubs.nctm.org/view/journals/mt/43/8/article-p377.xml},
	doi = {10.5951/MT.43.8.0377},
	language = {en},
	number = {8},
	urldate = {2023-12-16},
	journal = {The Mathematics Teacher},
	author = {Betz, William},
	year = {1967},
	pages = {377--387},
}

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