Indicators are tools or signs that help us understand and measure something. For example, in economics, GDP (Gross Domestic Product) is an indicator that shows the health of a country's economy. It tells us how much goods and services are produced and can help us compare different countries or track changes over time. In everyday life, we use indicators to make decisions. A simple example is a thermometer, which indicates the temperature outside. If it shows a high temperature, we might decide to wear lighter clothing. Similarly, indicators in various fields guide us in understanding complex information and making informed choices.