id: 06434935 dt: j an: 2015c.00451 au: Sota-Johnson; Hortensia; Fuller, Evan ti: Assessing proofs via oral interviews. so: Investig. Math. Learn. 4, No. 3, 1-14 (2012). py: 2012 pu: Research Council on Mathematics Learning (RCML), Memphis, TN; Taylor \& Francis (Routledge), Philadelphia, PA la: EN cc: D60 E50 H20 H30 ut: oral interviews; students’ understanding; abstract algebra; proof ci: li: ab: Summary: In this qualitative study, we explored how oral interviews can inform instructors about students’ understanding of abstract algebra and their ability to construct a proof in this setting. Our findings indicate that some student had a good understanding of the ideas needed for a subgroup proof, but could not write a coherent proof. On the other hand, these same students provided fairly sound verbal proofs. We discuss the implications of these results for teaching and future research. rv: