PowerPoint is currently making headlines in education, though probably not for the reasons Microsoft would like.
The Chronicle of Higher Education reports that José Bowen of Southern Methodist University has banished computers from his classrooms:
Mr. Bowen wants to discourage professors from using PowerPoint, because they often lean on the slide-display program as a crutch rather using it as a creative tool. Class time should be reserved for discussion, he contends, especially now that students can download lectures online and find libraries of information on the Web.
That same article in the Chronicle cites research conducted by my colleague Sandi Mann, showing that many students find lectures boring, and that the most commonly-cited reason for this is use of PowerPoint.
So perhaps ‘teaching naked’ (sans PowerPoint, gentle reader) might cure students’ boredom and encourage instructors to write more creative, interactive classes?
Well, while I’m curious to know where José Bowen’s nebulous ‘often’ statistic comes from, it may be true that lack of confidence encourages instructors to rely more on slides: in a recent pilot study, Andy Morley and I found that of the university lecturers we surveyed, 91% said that since starting teaching, they had reduced the amount of text they used on their slides. We interpret this to mean that increased practice leads to increased confidence; the more comfortable you are with your subject, the less material you ‘need’ on the slide. However, it’s still a big leap from there to asserting that instructors routinely use slides “as a crutch”; there are plenty of other reasons they might choose to use slides, something Mr Bowen apparently chooses to overlook.
There are really two issues in play here: taking slides out of the classroom, and making higher education more interactive. They’re kind of all twisted up together, so here are my thoughts about teaching naked, and why student engagement and class size present such a knotty problem in this era of massification and McDonaldization in HE.
1. Large class sizes turn higher education into a broadcast medium
Maybe José Bowen only teaches small classes. If so, he is very fortunate, because small-group teaching is brilliant. It allows instructors to get to know their students and allows students to engage, make mistakes, and ask questions in a relatively low-pressure environment.
But try getting students to do these things surrounded by 300 of their peers — it’s like pulling teeth. Not to mention that you need a decent pair of lungs, or a microphone, to maintain order. On this scale, education is pretty much a broadcast medium, and there’s not much you can do about it except ensure that, when you are talking (which really shouldn’t be all the time), you have appropriate visual aids, since we know these benefit learning.
So no, teaching naked is not necessarily the best thing to do when you have really big classes, as many of us do. It might be appropriate, but then you also need to consider that:
2. Teaching naked is more suitable to some subject areas than others
Some of my colleagues teach slideless, and their lectures are enduringly popular, seemingly undiminished by the absence of visual aids. To take one example, material in social psychology is rarely inherently visual; what’s important is the ability to spin a decent yarn, and I am glad to know and work with people who exemplify this approach.
But when I give lectures (remember, 300 students) on neuroanatomy or the visual system, I show diagrams, because then students can see what I am talking about. I could, of course, describe the brain’s visual pathways in excruciating detail, but students would soon be adrift in a sea of unfamiliar anatomical terminology, and I expect my lectures would be bitterly unpopular. Why add unnecessarily to the lecture’s extraneous cognitive load? Writers everywhere know the answer: show, don’t tell.
Of course, I don’t have to use slides as my visual aids, but they’re a highly visible medium that I know I can use well in large classes, so I use ’em. (Your mileage may vary.) But this then throws up a whole new problem:
3. Students expect that their classes are about information delivery.
Slides have become a big part of this expectation. Yes folks, we’re damned if we do and damned if we don’t: students have been known to complain when staff don’t use lecture slides, or don’t make them available. There are probably many reasons for this (ease of note-taking, knowing how to spell technical terminology, zoning out and missing something critical, or missing the entire lecture and needing a frame of reference — and no doubt there are plenty more), but I think they all boil down to the importance of possessing information.
Implicit in this delivery model of education is the suggestion that students are passive vessels into which learning is transferred via their attendance at lectures, a situation which may be exacerbated by use of slide-based handouts. The Chronicle notes that:
The biggest resistance to Mr. Bowen’s ideas has come from students, some of whom have groused about taking a more active role during those 50-minute class periods.
Of course, if students are to take a more active role than sitting in lectures, this requires that they have done some reading around the topic. But getting students to do even basic reading prior to class isn’t that straightforward; for one thing, since the introduction of tuition fees, many students now hold down part-time or even full-time jobs to pay their way through university. I have known students choose modules on the basis of what will fit around work, rather than their own academic interests, and I have found out the hard way that even when you say “this prior reading is mandatory for the session”, you either quickly reduce the number of people coming to that class, or end up adapting the session to accommodate those students who have not, despite your advice, done the reading. So here too, ‘teaching naked’, if we take that to mean ‘facilitating student discussions of material they have read outside class, in the absence of computers or other overt delivery methods’, might not work well.
So, should I kick computers out of my lecture theatre?
My honest feeling is that that teaching naked, much as I admire the principle, isn’t always compatible with how big higher education actually functions. We do have small-group teaching, and we try to keep that as interactive as possible, but plenty of our teaching is still lecture-based, and I think it’s a mistake to rejected computers (and slideware) out of hand, no matter how cool it is to diss PowerPoint right now*.
Fundamentally, it’s dogmatic to apply any hardline approach, whether that be ‘no slides’ or ‘slides all the way’. Educators are supposed to be smart — so let’s act like it.
* Actually, it’s been cool for quite a while. Lincoln took some stick about the Gettysburg Address and it all sort of snowballed from there.