Nurses in multiple roles are repeatedly asked to share their knowledge, expertise, and experience in a variety of settings. Sometimes, this sharing is on an informal basis, such as presenting an inservice class to a small group of coworkers. On occasion, nurses may need to present results of data collection or projects to small but more formal audiences, such as hospital executive boards. And, nurses sometimes are called upon to speak to very large audiences consisting of peers, other professionals, or community members. Most presenters use some type of visual aid to help illustrate their message.