Structural functionalism is a way of looking at how different parts of society work together to keep everything running. It means to think about the different parts of society, like families, schools, or governments, as if they were pieces of a machine. Each part has a specific 'job' or 'function' to do in the overall machine. For example, a family might provide its members with food and shelter, while a school might help teach people skills they need in life. All of these parts work together to keep the 'machine' of society running.