Flashcards are cards bearing information like words, numbers, or concepts that are used for classroom drills or private study. They simplify and condense information to focus on important facts and ideas. Flashcards help develop recognition and memory skills in children. When used properly with feedback, interspersing known and unknown items, and minimizing errors, flashcards can positively impact educational participation and achievement. Examples show how flashcards can represent mathematical expressions and equations.