The Magical Willow: A Numerical Game. A Pedagogical Proposal.

This text presents "The Magical Willow," a pedagogical proposal in the form of a numerical card game designed for primary and higher-grade students. The game's objective is to teach arithmetic operations and number sequences (square and tetrahedral) in a strategic and playful way. Players create combinations using the formula 10×C1 + 1×C2 ± C3 to get closer to target numbers. Framed within a fantasy narrative, the game encourages the recognition of patterns, strategic thinking, and calculation agility. The document includes the rules, mechanics, and pedagogical justification for the game.