Francois Léonard

Conceptual Bases of Arithmetic Errors: The Case of Decimal Fractions.

L. Resnick, P. Nesher, Francois Léonard, 1989 .

Intermediate Cognitive Organizations in the Process of Learning a Mathematical Concept: The Order of Positive Decimal Numbers

Francois Léonard, Catherine Sackur-Grisvard, Francois Léonard, 1985 .