Ana Helvia Quintero

TECHNOLOGY: A TOOL FOR ANALYSIS AND INTERPRETATION

Ana Helvia Quintero, Héctor Rosario, 2016 .

CONSTRUCTION OF CONCEPTS AND MATHEMATICAL INTERPRETATIONS

Ana Helvia Quintero, Héctor Rosario, 2016 .

ADDITION AND SUBTRACTION

Ana Helvia Quintero, Héctor Rosario, 2016 .

Conceptual Understanding in Solving Two-Step Word Problems with a Ratio.

Ana Helvia Quintero, A. H. Quintero, 1983 .