Strong metacognitive ability has been linked to the acquisition of new skills and competencies, and therefore is crucial for lifewide and lifelong learning necessary for the 21^st century learner. To advance the understanding of how adolescents think about their own thinking and how teachers can support that process in the classroom, a team of Singapore researchers from the National Institute of Education (NIE) conceived the programmatic research “Paving the Way Towards Lifewide and Lifelong Learning: Exploring and Fostering Metacognition for Learning and Transfer” (Project OER 02/21 LNH ). Funded by an Education Research Funding Programme by the Singapore Ministry of Education, the research provide multi-disciplinary, multi-perspective, and multi-method perspectives via five inter-linked research studies . The outcomes will inform practice and policy to enhance lifelong learning.