1.   At colleges and universities, graduate-student teaching assistants are often the backbone of large lecture classes, especially in the sciences.

2.   At Yale, TAs lead discussion sections and grade work for large lecture courses.

3.   Her delicate voice barely carries to the back of a large lecture hall at the University of California at Berkeley, where she is a professor of sociology.

4.   However, as an Echols Scholar, Rob could avoid large lecture classes at Virginia if he chose to do so.

5.   Instead of attending large lectures, students work in groups aided by computers.

6.   Instead of large lectures supplemented with tutorials and labs, students attend each class for fewer hours per week, but in smaller, more concentrated sessions.

7.   Last fall, he taught a large lecture class on critical issues in urban policy.

8.   Maybe you get something from large lecture halls and graduate assistants.

9.   Put a student with chicken pox at the front of a large lecture hall, and he could, within minutes, infect a large percentage of the room.

10.   Professors at Duquesne University in Pittsburgh communicate during large lectures using an electronic handset.