Teaching is the act of helping someone learn something new by explaining, demonstrating, or guiding them through it. When your math teacher shows you how to solve fractions, when a coach demonstrates how to dribble a basketball, or when an older sibling helps you master a tricky level in a video game, they're all teaching.

Good teaching requires both knowledge and skill. A teacher has to understand what the learner doesn't know yet, figure out how to explain it clearly, and adjust their approach when the first explanation doesn't work. Your grandmother might teach you to bake bread by letting you knead the dough yourself, while your piano instructor might teach a new piece by first playing it for you. Different subjects and different learners call for different methods.

Teaching is about revealing or illuminating knowledge, making the invisible visible. Anyone can teach, not just professional teachers. You're teaching when you show a younger kid how to tie their shoes or explain the rules of chess to a friend.

People have been teaching for as long as humans have existed, passing down survival skills, stories, crafts, and wisdom from one generation to the next. Without teaching, every person would have to figure out everything from scratch. Teaching is how civilization itself survives and grows.