This document summarizes a presentation on operations research given by Dr. Florence Nyangara. The presentation covered 3 case studies from Benin, Honduras, and Nepal that tested different approaches to improving community health programs. The case studies examined the impact of paying and training community health workers in Benin, integrating health services in Honduras, and using a cross-sector nutrition model in Nepal. The goal of operations research is to generate evidence that can inform practices, policies, and guidelines to improve health programming.