Aurora Gallardo

发表

The extension of the natural-number domain to the integers in the transition from arithmetic to algebra

Aurora Gallardo, 2002 .

Negative Numbers in the Teaching of Arithmetic. Repercussions in Elementary Algebra.

Aurora Gallardo, 1995 .

The Duality of Zero in the Transition from Arithmetic to Algebra.

Abraham Hernandez, Aurora Gallardo, Aurora Gallardo, 2003 .