Spanish SER vs. ESTAR Conjugation Flashcards (Montessori Color-Coded) Help your students think, speak, and conjugate in real time—not just fill out a worksheet! This set of colorful, photo-rich flashcards gives learners a prompt with a pronoun and an adjective/verb, and they must choose and conjugate estar (with 3 out of 12 cards using ser for contrast). It’s a quick, high-impact way to build confidence with one of Spanish’s trickiest essentials: ser vs. estar. Example: “you are shy” ≠ “