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.
The College Admissions Benefits of Teen Volunteering: 1  Helps students stand out among other applicants; admissions officers want well rounded co-eds who volunteer; service work is a leading decision-making factor after a student's GPA and SAT scores.