1 Associations. 2  Associations between actors and use cases are indicated in use case diagrams by solid lines. 3  An association exists whenever an actor is involved with an interaction described by a use case.
Benefits of Volunteering. Volunteering supports the Exploratorium and promotes hands-on science, artistic expression, and educational innovation. Volunteers contribute to the community while gaining additional experience and new skills. They get to know each other at gatherings and special events and by sharing their ideas and experiences via an e-mail list.
Volunteering brings about several benefits to those who are being helped. But did you know that there are actually some surprising benefits of volunteering for the volunteer himself? One of the benefits of volunteering is that you become connected to other people. Volunteers have a great impact on their community, often uniting the community as one. But volunteering also allows people to interact more, meet new people, and expand their network.