This document discusses various planning tools that can be used in implementing health programs, including affinity diagrams, tree diagrams, interrelationship diagrams, process decision program charts, matrix diagrams, prioritization matrices, and activity network diagrams. It provides examples of each tool and describes how and when they should be used, such as for problem solving, developing strategies, clarifying relationships between factors, scheduling complex projects with interdependent tasks, and prioritizing options when resources are limited.