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Direct linkLopez Fernandez, Jorge M.; Velazquez Estrella, Aileen – Teaching Children Mathematics, 2011
In this article, the authors discuss their approach to column addition and subtraction algorithms. Adapting an original idea of Paul Cobb and Erna Yackel's from "A Contextual Investigation of Three-Digit Addition and Subtraction" related to packing and unpacking candy in a candy factory, the authors provided an analogous context by…
Descriptors: Elementary Schools, Teaching Methods, Mathematics Skills, Number Concepts
