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.
Individual Direct Service Opportunities (Ages 18+): We have a few opportunities for volunteers who have committed time once or twice a month to provide professional services and teach beneficial life skills, such as: sewing, financial literacy, resume building, arts and crafts, yoga, etc.