"These Lectures are Gone in Sixty Seconds" is the title of an article in a recent issue of the Chronicle of Higher Education (subscription) describing the increasing use of "Microlectures." These are one to three minute instructional presentations designed to introduce supplemental assignments and discussion. Some advocates believe these brief digital lectures should replace the traditional lecture format altogether, and are better suited to the learning styles of younger students.
Take a 60-minute lecture. Cut the excess verbiage, do away with most of the details, and pare it down to key concepts and themes.
What's left? A "microlecture" over in as few as 60 seconds. A course designer for San Juan College, a community college in Farmington, N.M., says that in online education, such tiny bursts can teach just as well as traditional lectures when paired with assignments and discussions.
Skeptics, however, argue that lectures involving sustained arguments, such as literary analyses or explanations of complex equations, cannot be boiled down in this way.
The microlectures, which last from 60 seconds to three minutes, do little more than introduce key terms and concepts. In an online class on academic reading, for example, students learning about word construction listen to an 80-second microlecture that introduces word parts and explains that they have a bearing on the meaning of words, said Michelle Meeks, a reading instructor. Students then use an online dictionary to look up a list of 25 prefixes, suffixes, and word roots, writing up their findings and discussing them on a message board.