teach-in
- n an extended session (as on a college campus) for lectures and discussion on an important and usually controversial issue
- Goodstein spent most of the teach-in at New York's Fordham University, where students and faculty had organized a daylong series of lectures on the environment, ranging from the .
- The occasion will be a nationwide "teach-in" on April 22 to dramatize the ecological ills of the earth.
- Members of the organized Federally Employed Women, mindful of the law against striking Government workers, assembled only at lunch, though some participated in a teach-in at the .