MARÍN CASTILLO, M. J. The playful game and the didactic software as a pedagogical strategy to improve the reading-writing processes, related to the confusion of the letters B, b and D, d, in students of the second grade of the John F. Kennedy school, Zarzal Municipality. Rastros Rostros, v. 24, n. 1, p. 1–25, 18 Apr.2022.