Comparing Extracted and Stipulated Definitions in Algebra 1 Textbooks and Khan Academy
Nicholas Ivan Bayda 1 * , Grant Sutliff 1 *
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1 John Carroll University, USA* Corresponding Author


Previous research has established the importance of definitions in mathematics and have distinguished the difference between extracted and stipulated definitions. Much remains unknown, however, about the role definitions serve in developing students’ disciplinary literacy. In this study, we analyze how definitions from four US Algebra 1 textbooks and Khan Academy define vocabulary in the context of quadratics. Results show that Khan Academy tends to use extracted definitions, where textbooks tend to use stipulated definitions. Implications from this study are that there is a need to teach students both stipulated and extracted definitions.


This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Article Type: Research Article

INT ELECT J MATH ED, 2020, Volume 15, Issue 2, Article No: em0579

Publication date: 26 Jan 2020

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Article Downloads: 1309

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