This document discusses checklists, which are tools used to monitor skills, behaviors, or concepts. Checklists reduce human error by providing a structured format to assess completion of tasks. They typically use a yes/no format to indicate if criteria have been demonstrated. Checklists itemize tasks and provide space to mark their completion to ensure consistency. They are used for observations of individuals, groups, or whole classes and can focus on skills, behaviors, concepts, procedures, or activities. The document outlines best practices for constructing effective checklists, such as highlighting critical tasks and providing clear wording.