from washingtonpost.com:

Volunteer Opportunity - Discovery Room Volunt
Smithsonian's National Museum of Natural History, Washington, DC
Washington, DC

Are you interested in anthropology, biology, and mineral sciences? Do you like working with children and families in an interactive and dynamic setting? Consider volunteering in the Discovery Room! The Discovery Room is a hands-on space geared to families with children who want to explore the natural world at their own pace guided by their own interests. Volunteers guide children and families through activities, help them find answers to their questions and encourage their curiosity.

REQUIREMENTS:

    An interest in early childhood and elementary education, especially informal learning, is recommended. Interest in natural sciences and anthropology is also helpful, but not required.
    Enthusiasm for working with people of all ages.
    Eagerness to learn.
    Good oral communication skills.
    Summer volunteers are required to serve a minimum of two 3-hour shifts per week. Weekday and weekend opportunities are available in the morning and afternoon.
    Attendance at Museum orientation and training sessions. Training includes directed, independent study and research; introduction to object-based inquiry strategies and techniques; mentoring by experienced volunteers; lectures and demonstrations by Museum educators; and on-the-job experience.

For more information, view the full listing here.