This document discusses project-based learning (PBL) as an important approach for 21st century education. PBL engages students in investigating real-world problems and challenges in an active way. It is more relevant to the real tasks students will face after graduation compared to traditional rote memorization. With PBL, students learn to become independent thinkers, problem solvers, and lifelong learners by designing solutions to authentic problems. The document provides the example of an "Arts & Bots" project to illustrate how PBL cultivates skills like collaboration, creativity, communication and technology use.