Teaching With Twitter: Not for the Faint of Heart

Maybe Sugato Chakravarty should wear a helmet to class. The professor of consumer sciences and retailing at Purdue University repeatedly attempts the instructional equivalent of jumping a motorcycle over a row of flaming barrels. OK, asking 250 students to post questions on Twitter during a class doesn't risk life or limb. But it can cause ego damage if the mob of students in his course on...