21st century skills are a series of higher-order skills, abilities, and learning dispositions that have been identified as being required for success in the rapidly changing, digital society and workplaces. Many of these skills are also defining qualities of progressive education as well as being associated with deeper learning, which is based on mastering skills such as analytic reasoning, complex problem solving, and teamwork. These skills differ from traditional academic skills in that they are not primarily content knowledge-based.[25][26][27]