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Direct linkEstela A. Vallejo-Vargas; David A. Reid – International Journal of Science and Mathematics Education, 2024
This article presents a case study of two Grade 5 boys' argumentation concerning addition and subtraction of negative numbers while using an interactive tablet-based application simulating positive and negative tiles. We examine the properties of integers they conjectured, and the kinds of evidence and arguments they used to support their…
Descriptors: Grade 5, Persuasive Discourse, Addition, Subtraction
