
A Lecture Room without Walls
Francis J. Conway, PhD
Abstract: It may well be that no invention of the 20th century is
destined to leave as deep an imprint on the educational process
as the personal computer. A device the size of a briefcase that
can store as much information as a large library and that can
retrieve any desired bit of that information in a few
milliseconds and then display it on a screen or printout in any
format has to be ranked as one of the wonders of the modern
world. If that were not enough, computers are rapidly being
integrated into the world-wide telecommunication network and
are thereby accessing and making available to the student even
greater volumes of information as well as providing a means of
communication between all computers on the planet.
This has major implications for the educational delivery
system. Until now this system has been driven almost
exclusively by the traditional 19th century lecture-room format
in which a faculty member of an educational institution talks
for about an hour in front of a captive audience of students.
A series of such talks usually constitutes a "course" in the
lecturer's field of study. One or more times during the lecture
course the faculty member will demand that the students answer
a series of written questions or solve a series of problems
using data and methods derived from the lectures and from one
or more textbooks the students are required to purchase. These
written tests constitute a feed-back mechanism that enables the
faculty member to determine how many and which students have
retained some specified fraction of the material covered in the
lectures.
Nowhere has this 19th century anachronistic pedantry
survived in so well-preserved a form as in the modern medical
school. As the 20th century draws to a close we still see
professors holding forth in the large classroom-amphitheaters
like latter-day Koches or Oslers. But, as the pace of life and
learning picks up, the personal lecture format is becoming as
difficult to administer as it is to justify. Like a painted
Egyptian sarcophagus in a bustling subway station, the
traditional verbal lecture is starting to look out of place, or
even in the way.
Consider the possibilities of a computerized curriculum.
Every student would have two computers: a desktop machine in
the dorm room and a laptop (or "notebook") to carry around
school. The student could spend all of his or her time in the
library, laboratory or clinic and simply plug the laptop into a
digital wall outlet that allowed access to an in-house local
area network (LAN). Subject matter formerly presented as
lecture material could be called up on the screen as needed to
supplement the lab procedure or library information. An entire
textbook in multimedia format with sound and color pictures
keyed to the text could be accessed by the student while he or
she was examining a specimen in the lab or a patient in the
clinic. This could enable a profound change in the traditional
structure of the first-year medical school curriculum which, up
to now, has been centered on an artificial and inefficient
dichotomy between lecture and laboratory.
Let's look at a specific case: the first-year class in a
medical school has arrived at the study of the accessory glands
of the digestive tube. Today's organ is the liver. Students sit
around lab tables, some of which contain prosected cadavers
with the liver exposed in situ while other tables contain whole
livers or livers still connected to the small intestine. Each
student plugs their laptop computer into the wall receptacles.
Once in the LAN, the student can call up a multimedia textbook
of gross anatomy, a video disk of 30,000 color histology
photomicrographs, a series of abdominal radiograms, electron
micrographs of liver tissue, a videotape of a patient with
liver disease, the patient's laboratory test results, a video
disk of pathological photomicrographs, EMs or X-rays and taped
comments by various physicians and professors on liver topics.
All of this while examining real livers in the laboratory.
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