http://www.youtube.com/watch?v=4c6yM86m7uI
Challenged based learning is an educational approach in which students are presented with real-world problems or challenges and are encouraged to develop solutions through active learning and collaboration.
A self-organised learning environment (SOLE) is an educational approach that promotes self-directed learning and encourages students to work collaboratively to answer open-ended questions or solve real-world problems. It is often facilitated by technology and aims to develop critical thinking, creativity, and communication skills.