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.
I volunteered over 100 hours per year in the 4 years leading up to college and I was able to get a scholarship (a relatively small one but every bit helps!) from my college as a result. There are tons of benefits to volunteering. You'll learn skills and you'll learn about yourself and others.