Economics is the study of how people make choices about using limited resources to satisfy their wants and needs. When your family decides whether to spend money on a vacation or save it for a new car, that's economics in action. When a city chooses between building a new park or fixing roads, that's economics too.

The word comes from ancient Greek words meaning “household management,” because even the Greeks understood that families face constant decisions about what to buy, make, or save. Economics looks at these same questions on every scale: individuals, businesses, cities, and entire countries.

Economists study questions like: Why do some things cost more than others? What happens when lots of people want something but there isn't enough of it? How do people decide what jobs to take or what to buy? Why are some countries wealthy while others struggle?

At its heart, economics recognizes a basic truth: we can't have everything we want because resources like time, money, materials, and labor are limited. A student faces economics when choosing between practicing piano or playing with friends (limited time). A baker faces it when deciding how many loaves to make with limited flour. A country faces it when deciding how to use its tax money.

Understanding economics helps explain why the world works the way it does, from the price of your favorite snack to why your parents make the financial decisions they do.