This document discusses monitoring, evaluation and learning approaches used by DFID, including the importance of theory of change and logical frameworks. It outlines four foundation stones of MEL: understanding the program, MEL needs and demands, planning the MEL approach, and managing evaluations. Key aspects of developing a theory of change are defined. The log frame template used by DFID is presented, and assumptions that can undermine programs if not identified are discussed. Useful links for additional resources are also provided.