A key trend in many schools today is the idea of problem-based learning, where students solve a genuine and complex problem, using the important 21st century skills of creativity, innovation, collaboration and communication, among others. This concept may overlap with project-based learning, inquiry-based learning, or authentic learning, but what are these terms all about? True and effective problem-based learning should have all the elements of authentic learning – to create a classroom that is as dynamic as the world around us, and one that reflects the way they will use the knowledge and skills in the real world.