Showing posts with label teaching. Show all posts
Showing posts with label teaching. Show all posts

Friday, May 12, 2017

The impact of classroom architecture on teaching and learning

Award-winning professor Michael Wesch writes and speaks on the influence of classroom architecture on teaching and learning. I saw a striking example of the impact of classroom architecture when the projector failed in my classroom.

I was reminded of this topic recently when I substituted for a colleague, Larry Rosen, who teaches in a large, half-full auditorium. I was struck by the fact that, as you see here, the students chose to spread out uniformly when there is extra room:

Professor Rosen in a 60 Minutes segment

I can understand that -- I too like space between me and my neighbors and the people in the back row can quietly sneak out of the auditorium if the lecture gets boring -- but it impacts classroom interaction.

Like many others, I encourage student interaction -- with me and among themselves -- during a lecture. One technique I use is to throw out a question and ask them to discuss it or compare answers with their neighbors. The purpose is not to find the right answer but self-diagnosis -- to help them see whether or not they understand the concept I am talking about. That does not work well when the students are spread out as in the auditorium shown above.

For a quick summary of Wesch's view of the implicit messages of traditional classroom architecture, watch the following short (3:14) excerpt from a longer (1:06:12) talk:





Thursday, October 01, 2015

Current event presentations

I have been experimenting with supplementary presentations in my undergraduate Internet literacy course this term. The presenations are generally triggered by a current event that is relevant to our class. They consist of a handfull of annotated slides, most of which have an image and just few words and questions, so I expect the students to study the notes accompanying them after I present them in class.

I've presented these so far this semester:

Feel free to use them and suggest others.

Here are a couple random slides to illustrate the presentation style:




Saturday, September 07, 2013

Surveying the (changing) experience of our students

I teach a class on digital literacy in the Internet era, and the backgrounds and digital experience of my students change every year. (See the Beloit College Mindset List for general changes in student backgrounds).

As such, I start the term with a student background survey, which serves three purposes 1) I use the survey results to assign the students to study groups 2) to let the students see how their background compares with others and 3) to provide an example of an Internet-based service -- online survey processing -- which we can discuss in class.

You can see this term's survey results here. (I've omitted the answers to open-ended question like what is your major (they vary considerably), what audio, video or image editor do you use (most answer "none" to all three) and what is your relevant work experience).

I would appreciate suggestions for changes to my survey -- what else would be useful and informative to know?

Do you conduct a similar survey? If so, what do you ask?

-----

Update 9/8/2013

Thirty three freshmen, one sophomore, seven juniors and fourteen seniors completed the survey. Their majors were:

Monday, June 24, 2013

Teaching with Google Glass

An article in the Chronicle of Higher Education quotes faculty members speculating on ways to use Google glass in teaching, for example:

  • Watch a teacher do something through his or her own eyes
  • Stream the conductor's view of an orchestra to an audience during a concert
  • See first-person point of view of a subject in a documentary film
  • See lecture notes without standing at the podium
Here is a promotional video of a teacher's first-person field trip to CERN that was streamed back to a physics class:

Saturday, May 04, 2013

New wine for new bottles -- innovation from modular teaching material and MOOCs

I received a nice award and gave a talk on "Innovation from modular teaching material and MOOCs" at the Sloan Consortium 6th Annual International Symposium on Emerging Technology for Online Learning (#et4online).

The slides from the talk are now online here.

Each slide has text notes so they should stand on their own.  The presentation also contains quite a few links as well as a recording of Wolfman Jack howling.


If you wish, you can watch a video of the presentation, but that would probably take longer than reading through the PowerPoints.

Wednesday, December 05, 2012

How a broken projector improved my class

I teach in the "smart" classroom shown here. The students sit at computers and the professor has a podium computer. I use the overhead display during every minute of every class -- for presentations and live demonstrations of all sorts of things.

Yesterday morning, I walked into the classroom and discovered that the overhead display was broken, so we had to improvise. I sat down at one of the student computers in the middle of a row (the one with the arrow) and the students crammed in behind me -- sitting on chairs, tables and standing. All of my teaching material is online, so I was able to use the exact same PowerPoint decks and do the exact same demonstrations as I would have used from the podium if the projector had been working. The material was 100% the same -- only the seating arrangement changed. I don't know whether you can picture the scene, but it was cramped and disorderly. (I wish I had taken a picture).

Why am I telling you this? I have been teaching on and off during my entire career, and it was one of the best class sessions I can remember.

I taught a second section of the same class yesterday evening in the same room. The projector worked fine for about half an hour, then broke again. We crammed in behind the student computer and continued. The class lit up. Students listened, spoke, answered questions I threw out, asked a lot of good questions, made relevant comments and wisecracked and teased. It was even better than the morning class.

I was able to do this because my classes are small. A few students were too far from my screen to see it comfortably, so they turned on a couple of computers in the same row and navigated along with me. (We could have automated that by starting up a Google Hangout and sharing screens).

The success of our re-arranged room would not have surprised Michael Wesch, an award winning professor of anthropology who has long noted the impact of room design on teaching. (For a taste of his thoughts on the topic, watch this 3m 46s excerpt I cut from a talk he gave upon receiving an outstanding teaching award).

I'm no anthropologist, but these class sessions felt better than a small seminar around a conference table. The ad-hoc seating arrangement turned the classes into focused bull sessions by breaking down social barriers between the students and me and, more important, between themselves.

The success of this small, ad hoc arrangement is ironic, because it comes at a time when I have been writing about massive open online classes, MOOCS, and have proposed teaching one.

MOOCs have the potential to be extremely cost efficient, but my small class gathered around a PC was extremely costly -- the California taxpayers would not sustain it and the students would get tired of standing up after a while.

Could we capture some of the enthusiasm and interaction of the live class I had yesterday and share it with a mass audience taking a MOOC at the same time? Maybe.

-----

For more on Michael Wesch:

Saturday, August 25, 2012

Two researchable questions: do talking heads and moving hands improve learning?

I would like to see studies testing the hypotheses that seeing a talking head or a hand writing on the screen improves student comprehension and retention.

I've developed a collection of modules for my digital literacy course. Each module contains an annotated PowerPoint presentation and other material. As I find time, I record videos of the PowerPoint presentations, using the annotation as a script.

To conserve bandwidth and storage space, I only use still images of the PowerPoint slides in my videos. There is no video of me speaking. I reasoned that my students knew what I looked like, and viewers who were not in my class could see what I looked like in a photo.

But, I notice that Google (left), Coursera (right) and others include video of the speaker's face during their presentations.


Is there evidence that talking heads improve comprehension and retention?

We see a similar contrast in the screencast videos produced by Udacity (left) and the Khan Academy (right}. Udacity videos are screencasts with superimposed video showing the teacher's hand and pen while drawing and writing on the screen (with noticeable parallax). Khan produces screencasts in which only a cursor is shown.


Does seeing the hand and pen improve comprehension and retention?

(If these research questions sound interesting, see a proposal for a related study of the effect on comprehension and retention of varying playback speed and bullet point images).

Monday, January 09, 2012

A student's evaluation of Stanford's massive, free, online courses

I wrote a couple of blog posts about Stanford's experiment with massive, free online classes when they were announced. The courses are now over, and Ben Rudolph, a Stanford student who took one of them on campus, has written a blog post describing his experience.

The basic format of the class was: watch 5-6 short (~10 minute) videos with interspersed review questions and complete a programming assignment each week.

Rudolph thought the video lectures were excellent, but found the programming exercises and review questions too simple. It seems the programming exercises were simplified so that they could be graded automatically and, while he found that the review questions helped him refresh what he had learned, "they hardly ever asked anything that the lecture didn’t explicitly state."

(This is not surprising, since making up short answer questions that require thinking and deduction is very difficult).

The bottom line is that he considered the course to be easier than other Stanford computer science classes he had taken.

There has been lively discussion of his post on his blog and others. I would particularly recommend that you read Debating the ‘Flipped Classroom’ at Stanford, which includes the reaction of Andrew Y. Ng, the professor who taught the course, to Rudolph's criticism.

Sunday, November 20, 2011

A "post Gutenberg" e-text for biology 101

In earlier posts, I talked about an electronic text Nature would publish this fall. I suggested that it was a noteworthy departure from the established textbook format and business model -- perhaps the first "post Gutenberg" text.

The etext is out now and being used on some campuses. I've had a chance to play around with it, and remain impressed. Here is what I've seen.

The professor creates a "classroom" like the one shown here. The classroom is personalized with her name and photo and an announcement welcoming the students to the class.

Click to enlarge

The classroom also contains the material she selected to include in the course. The material is organized into units, each of which contains several modules. In this example, she included four modules in the Introduction unit. She could also have included other material like summaries of and links to primary literature, and supporting topics like lab skills or hypothesis formation and data analysis.

Clicking on "textbook" takes us to the etext itself. I put quotes around textbook, because this is not a PDF-like reproduction of a typical textbook. It is not even a "book." It is a collection of 196 modules.

Each module begins with an introduction, listing the topics covered and the skills or learning objectives it teaches and concludes with a summary, which refers back to the topics and skills. Modules also have associated multiple choice quizzes. That is pretty standard textbook fare, but the teaching "pages" covering the material are not.

I've put the word page in quotes because these are not what we think of as pages. For a start, they vary in length and are significantly longer than typical book pages. Lets look at a sample page.

The page I picked is 17 screens long on my laptop. In addition to text, it contains 13 figures, a table and six test your knowledge questions. (The page I picked did not include any animations or videos, but others do).

As shown here, the figures are like those found in Scientific American Magazine -- high quality images with relatively long captions so they can stand on their own. (Nature and Scientific American are both MacMillan Publising companies).


The page I selected contained six open-ended knowledge test questions. After reading the question, the student submits then a suggested answer is displayed. This example shows a question, my answer and the suggested answer. These are not graded or reported to the professor -- they are food for thought.


The pages also include links to supplementary material like essays on the importance of this particular topic and primary references in a narrow, right hand column. The essays on the importance of a topic are written by practicing scientists and are comparable in format and quality to the text pages. The primary references include both summaries and links to the journal articles, and there are roughly 100 all together.

Modules also include multiple choice quizzes. The first time a student takes a quiz, the results are reported to the professor, but they can re-take the quiz as often as they wish. The professor has tools to analyze the quiz data, for example comparing the scores of a particular student to the class as a whole and, most interestingly, to other classes around the world which use this text. My guess is that we will see more analytic tools in the future -- perhaps one day giving very specific feedback to students.

As you see at the top of the screenshot, the classroom also contains links to a threaded discussion, grade book, and teaching resources, which include PowerPoint slides for all of the figures, a list of all the primary sources, and 2,000 test questions.

We have been talking about the professor's view of the classroom. The student view is somewhat different. They have access to flash cards and cheat sheets for each module. They can take notes while they study, and aggregate those annotations into a single study guide for the module. They can also hide or display their notes while reading.

The professor can see a student's annotations, but, at this time, there is no ability for students to share them among themselves. Students expect social networking these days, so my guess is that Nature will probably build support for study groups and sharing notes in future etexts.

The modular structure and content of this etext is different than a traditional etext and so is Nature's business model. Traditional textbooks are written by one or a small group of authors who write the entire book and receive royalties. By contrast, Nature has contracted with teachers and scientists to write specific modules and supplementary essays for a fee.

The payment model is also different. Traditional textbook publishers bring out new every two or three years to create demand for new books instead of used or rented books. Alternatively, they offer access to an electronic version for a limited time.

Nature has a different model. The student pays $49, which includes lifetime access to the material. Nature is committed to making continuous updates as the science and pedagogy change. The student gets a subscription, not a book. The $49 price is less than that of a typical print or electronic textbook, but every student in a class must subscribe. It seems to me that this would be attractive to the general public as well as enrolled students.

I don't know Nature's costs and revenues, but, since fewer than half of the students taking a class today purchase a new book, this subscription model might be more profitable than selling books. If this model catches on, it will hurt the used book, college book store and book rental (hard copy or electronic) businesses.

The reader does not have to download and install a program to use the book. The book is published in HTML and CSS, so it can be used with any modern Web browser. The server automatically detects the size and resolution of a user's display and delivers appropriate content. That allows students to use laptops, desktops, tablets, etc., but imposes extra cost on Nature -- they have to prepare around twenty different versions of each piece of art.

Gutenberg would not recognize today's books. About fifty years after Gutenberg, Aldus made signficant changes in typography, book size and production and the publishing business model. But Aldus would not recognize today's books either. Things like paragraphs, punctuation characters, chapters, indices, and tables of contents would seem to be radical innovations.

Nature has gone beyond the traditional ebook with this text, but, as with Aldus, I think this is just the first step.

Monday, October 24, 2011

Draft of IT literacy paper


I just posted the draft of a paper called IT literacy – evolution, curriculum and a modular e-text.

In the paper, I review the evolution of the IT literacy course from the 1960s to today, then describe my Internet-era curriculum and the modular e-text (currently 104 modules) I am developing to teach it.

Tuesday, October 18, 2011

Worries about OpenClass -- a new learning management system from Google and Pearson

Google and Pearson, a large textbook and etext publisher, are joining forces to offer a free learning management system (LMS) called OpenClass. OpenClass will be competition for Blackboard since it will be free, and, given the skills and resources of Google and Pearson, well done. It will also compete with Moodle, which is open source, but requires a significant staff committment to run.

That is the good news for OpenClass. The bad news for OpenClass is that the LMS market is not competitve -- it is dominated by Blackboard, Moodle and a few less popular LMSs.

Even if OpenClass is better than Blackboard and Moodle -- "open and not clunky" as they claim on their Web site -- it will take time to become a major player because we are locked into current LMSs by the material we have created, the training our students and staff have accumulated, and the systems we have built around them.

Do you use an LMS on your campus? If so, how many students and faculty know how to use it? Do students expect it to be used in a class? Have faculty invested in material that is now loaded into the LMS? Do they use it to automate testing and grading? Is it integrated with student records applications and the textbooks faculty adopt?

Don't get me wrong -- this is not a defense of the current LMSs. My campus uses Blackboard, but it is way too "clunky and closed" for me to use. I am just saying that it will be hard to displace even if OpenClass is superior.

Don't get me wrong on that either. I am not enthusiastic about OpenClass. For a start, I worry that it will favor Google Apps and Pearson teaching material. More important, I worry about the pedagogical impact of any LMS. If OpenClass were to become dominant, would it push us to teach within the confines of the OpenClass LMS -- a Procrustean fit?

On my campus today, on-line education is synonymous with Blackboard. We are in the very early stages of networked education and educational technology. It is too early for such standardization.

Don't get me wrong one last time. I believe the folks working on OpenClass at Google and Pearson are smart and mean well. I just wished they worked for a small startup that did not have such deep pockets.

For more discussion see:
Google Plus discussion
Chronicle of Higher Education discussion
Pearson announcement

Sunday, October 16, 2011

New IT literacy teaching modules

I've recently posted or revised 12 IT literacy teaching modules:
This brings the total to 102 modules. Each module has an annotated PowerPoint presentation and assignment, and many have videos, transcripts and other components. (I am adding them as quickly as possible).

Perhaps you can use one or more in a class or for self study. You can see how the modules are structured here and browse through them and here. You can also subscribe to announcements of future modules.

Friday, October 07, 2011

More on massive, open, online classes (MOOCs)

I recently wrote a post on the mother of all MOOCs, the computer science classes getting under way at Stanford this week.

If you found that interesting, check out this podcast interview of George Siemens, who leads Athabasca University’s Technology Enhanced Knowledge Research Institute.

Siemens is a MOOC practitioner and researcher. His classes have enrollments in the thousands, and he handles the large number by decentralizing -- encouraging students to help each other and form study and discussion groups using whichever social media tools they prefer, He is distributing the teaching responsibility to the network as a whole.

Siemens does not suggest that he has found the optimal model -- he is experimenting. He says "we need to tweak or in some cases completely remodel the university system," and he is trying to learn what works and what doesn't.

One thing is for sure -- there is no single answer. What works for a math course may not work for a literature course and what works for an upper division course may not work for a lower division course.

This interview is the latest installment of a monthly educational technology podcast from the Chronicle of Higher Education. I'd recommend checking that out too.

Wednesday, August 10, 2011

Directory of e-Learning tools

Jeff Borden and his colleagues at Pearson eCollege have created a directory of 500 e-learning tools. The tools are divided into several categories: Continuing Education, Data, Discipline Specific Material, Graphics & Audio, Learning Assets, Measurement, Planning, Presentation Tools, Reference, Repository/Community, Search Engine, Student Tools, Technical, Online Teaching Theory, Web 2.0, and YouTube Videos.

Nearly all of the tools are free, and there is something there for every teacher and student interested in Internet-based education.

Look the material over and, if you find a tool you like, let us know about it.

Monday, August 08, 2011

Free, online Intro to AI from Stanford University

Stanford University CS 221 Introduction to to AI will be offered free online this fall.

The lectures will be online and all students will use the same materials, do the same assignments and take the same exams. Non-Stanford students will receive a completion letter showing where they fall on the grading curve. Over 10.000 students had requested information in the first three days after the course was announced. The instructors hope they can handle 10s or 100s of thousand students using tools like Google Moderator to select questions for discussion. I am curious to see how this and other very large online courses work out.

Thursday, June 02, 2011

More on Nature's forthcoming digital texts

A few days ago, I posted a positive note about a series of electronic texts announced by Nature Publishing. It sounded like a significant improvement over the electronic textbooks being offered by other major publishers, so, I followed up with an email interview of Vikram Savkar, Publishing Director for Nature Education. The questions and answers follow, and the added emphasis is mine, not his -- all good stuff.

When will it be possible to play around with the etext or at least a sample interactive lesson or other material?

We expect to be able to demo sample modules for press in early to mid August, ahead of publication of the full product for the broader market on September 1 2011. Review access will be available to instructors from September 1, 2011.
Is the etext a collection of interactive lessons or are the interactive lessons a supplement to an integrated textbook?
The interactive lessons in fact are the textbook. Each lesson is a thorough exploration of the topic at hand, beginning with background information, followed by a discussion of core concepts, mid-point self-tests, interactive activities to allow the student to apply core concepts, and end of lesson test questions. There are approximately 200 such lessons arranged in the sequence in which introductory biology courses are usually taught. Instructors will be able to rearrange the lessons if they teach topics in a somewhat different order. The lessons are interactive in two senses. First, because they are online - and integrated with the gradebook, annotation tools, self-tests, end of lessons test questions, and so on - students will actively drive their own progress through the material, with continual feedback to let them know where they stand. Second, most lessons contain rich interactive demonstrations (available in both Flash and HTML5 versions) that immerse students even more deeply in particularly key concepts. Taken as a whole, the interactive textbook combines what is best from print textbooks (thorough text, peer reviewed figures) with the best of what is only possible online. Note that the textbook will come with a rich set of supplements, including lecture notes, instructor guides, and more.
How often will it be revised?
One of our core goals in designing Principles of Biology was to enable it to evolve frequently, in response to both emerging scientific discoveries and suggestions that instructors have on how to expand particular modules. We plan to make these revisions on an ongoing basis. Instructors will be able to choose on a case by case basis whether or not they import these revisions during the semester, so no instructors will ever be surprised by an automatic update to the text. We think of this approach as creating a "living edition".
Will it be for sale to the general public as well as students?
Yes (and I agree with you, I think there are many lifelong learners who could benefit from this book) Principles of Biology will be available for individual purchase from the Nature Education website from September 1, 2011. The general public can pay $49 by credit card and will receive the same lifetime access that students do, with the same continual revision to maintain scientific currency.
To what extent, if any, will uses be able to cache material for offline study?
Students will have access to an offline digital version, which has most of the instructional content but won't be tied into the gradebook and a few other connection-dependent features. It's not a substitute for the full interactive textbook, but it should allow students to do some good studying on a plane or wherever else they happen to have time but no internet access.
What about DRM?
There is some DRM, but the heart of the anti-piracy strategy we've chosen for this program is ensuring that the official product is so effective that there is a significant disincentive to use a pirated version. For example, the assessments that we've integrated into every page of the textbook will feed into the online gradebook that instructors use to evaluate students' progress. Students who don't purchase the digital product won't be in the gradebook . . . that will be inconvenient for them. I'm sure some people will try to bend the rules. Overall, by pricing this product affordably, adding in plenty of value online, and mixing in a little bit of DRM, I believe we've created a strong case for people to use this product as intended.
Have you any art or sample videos that we can look at or link to?
Not just yet . . . the website is still in development and testing. We'll have samples available to you in August. We do have a few mock-ups of an iPad view of Principles of Biology if you would like to use them in the BYTE.com piece. These are early design concepts at this stage. You can see an example here.
Will there be a computer science "book" in the series? Will there be versions for non-majors, for example, "IT literacy" as opposed to computer science?
Since the natural sciences are our core strength as a publisher, our primary focus is to expand the program across most of the life and physical sciences in next few years. I would say that expansion into fields like computer science would likely only be through partnerships with publishers who specialize in those spaces.
If they deliver what they seem to be promising, and live up to the policies I've highlighted above, these will be terrific books. Since they are limiting themselves to life and physical science, I hope other publishers are watching.

(Here is another interview of Savkar -- check it out).

Friday, May 27, 2011

Textbooks -- moving beyond the "Gutenberg Bible"

Nature Education, in partnership with the California State University System (my employer), has announced a series of digital textbooks in college-level science. The first book in the series, Principles of Biology, is intended for biology majors and will be available September 1, 2011. It will be used at three CSU campuses in the fall.

Gutenberg's first books were reprints of the large handwritten bibles of the time. Today, traditional textbook publishers are offering machine readable versions of previously printed books and chapters. Nature's books promise to depart from tradition in the way they are created and distributed.

Nature's books will be "born digital" -- created from scratch by a group of scientists, instructors, artists, and interaction designers working together under the guidance of their editorial team. The first book will not be out until September, but it is undergoing extensive peer review by CSU faculty and is slated to include 175 interactive lessons and the usual supplementary material like test banks and PowerPoint presentations.

Nature's business model is also is also different. The biology book will retail for $49, which is cheap by the standards of the mainstream textbook industry. But that is not the big change. Students purchasing electronic versions of textbooks today typically gain access for a limited time, perhaps a year. Nature is proposing lifetime access to a continuously-updated book -- a textbook with an open-ended subscription.

They plan to sell direct to students through college book stores or sell site licenses to schools. But, if the subscription/books are as good as they sound in the press release, won't there be a general retail demand for them? Hey, I want one.

The textbook industry is ripe for change. There are a few dominant companies (including Nature’s parent company, MacMillan) with large sales forces, high printing and distribution costs, and bookstore markups. (Click the image above for a cost breakdown). These books from Nature may be game changers. Nature is a prestigious publisher, the CSU is a large textbook customer, and the access model and price are very attractive.

Nature is departing from the traditional textbook model by having a team of collaborators create a digital book from scratch and selling it as an ongoing subscription at a low price. If they can deliver, they may be the Aldine Press of our day. (Aldine's 15-16th century innovations included publishing small, portable books, punctuation like the period at the end of a sentence, and typography like italic text). Stay tuned for more when we get some hands-on experience with the biology book and interactive lessons.

Multimedia Learning by Richard E. Mayer

A few years ago, I was skeptical of PowerPoint, going along with the assumption that PowerPoint presentations had to be dull. I unthinkingly bought presentation guru Edward Tufte's claim that PowerPoint is evil, that "Power corrupts and PowerPoint corrupts absolutely."

Well, I'm a convert -- PowerPoint presentations are at the heart of my electronic text. I believe presentations combining slides and narration can be effective teaching tools, and I just read a book of research supporting that claim.

Richard E. Mayer, a UCSB psychologist, reports on 93 controlled studies in his book Multimedia Learning. Mayer's experiments test a dozen presentation principles, which he hypothesizes to be true, and 92 of those studies confirm the hypothesis.

For example, consider his redundancy principle, which holds that people learn better from graphics and narration than from graphics, narration and text -- the text is a redundant distraction.

To test this principle, Mayer and his colleagues ran five experiments in which one group learned from a multimedia presentation with narrated graphics and a second group saw the same presentation with text captions below the graphics. The non-caption group learned more in all five experiments.

He also gives theoretical explanations for his principles. The redundancy principle follows from visual overload in seeing captions and images simultaneously and mental effort expended in comparing spoken narration and written text. Mayer also explores the boundary conditions of his principles. Redundancy is less of a distraction if the captions are short or the text is shown after the narration finishes, not while it is playing.

Here are Mayer's twelve principles. Don't be bound by them, but use them as a checklist when going back over an old presentation or planning a new one.
  • Coherence Principle: People learn better when extraneous words, pictures, and sounds are excluded rather than included.
  • Signaling Principle: People learn better when cues that highlight the organization of the essential material are added.
  • Redundancy Principle: People learn better from graphics and narration than from graphics, narration, and on-screen text.
  • Spatial Contiguity Principle: People learn better when corresponding words and pictures are presented near rather than far from each other on the page or screen.
  • Temporal Contiguity Principle: People learn better when corresponding words and pictures are presented simultaneously rather than successively.
  • Segmenting Principle: People learn better when a multimedia lesson is presented in user-paced segments rather than as a continuous unit.
  • Pre-training Principle: People learn better from a multimedia lesson when they know the names and characteristics of the main concepts.
  • Modality Principle: People learn better from graphics and narration than from animation and on-screen text.
  • Multimedia Principle: People learn better from words and pictures than from words alone.
  • Personalization Principle: People learn better from multimedia lessons when words are in conversational style rather than formal style.
  • Voice Principle: People learn better when the narration in multimedia lessons is spoken in a friendly human voice rather than a machine voice.
  • Image Principle: People do not necessarily learn better from a multimedia lesson when the speaker’s image is added to the screen.
Let me close by suggesting two Mayer-like experiments that I would like to see run. One is a test of the effectiveness of showing images followed by the images with captions, the other a study of the effect of changing the tempo of a presentation. I'd love to hear the results if you run the experiments.

Thursday, May 19, 2011

Some experience with a modular electronic text


I have been building and using a modular electronic text (etext) for an IT literacy course this term.

I recently gave a presentation on modular electronic texts and my course. You can see a link to the presentation and comments on it here.

The following is a digest of those comments and some of my reactions to them.

Cost: Several people noted that lower cost was an advantage of etexts. The etext for my course is free, but traditional publishers charge for etexts. While those charges are high today, they will eventually decline to reflect savings in printing and distribution cost.

Environmental concerns: An etext can be read from a screen, which requires power, but no printing. Many students print the module transcripts, but that is not as costly to the environment as printing and distributing a book.

Portability: My course would easily fit in a flash drive; however, there is (at present) no facility for one-click download of a module, subset of modules or the entire course. This is less important to people with Internet-connected portable devices like tablets and smart phones.

Internet connectivity: Several people pointed out that Internet connectivity is needed to access the etext. Without a simple module-download function, that is the case. On the other hand, being connected is valuable even if you have a local copy of the entire etext. If one is online while studying a module, they can search for complementary information, send messages to other students, the professor and the module content creator, follow the module resource links, etc.

Flexibility: Several people pointed out that an etext was more flexible -- new content or a new way of explaining or illustrating a point can easily be added. However, others pointed out that this caused a versioning problem -- the transcript a student printed or the presentation they studied from might not be current. Furthermore, the videos might lag behind the presentations and not reflect all changes. An explicit version history can solve that problem -- I will start recording significant changes to presentations in the topic module comment section.

Campus infrastructure: This etext can be used for self-study, but I use the presentations in a face-to-face classroom. All of today's classrooms do not have Internet-connected computers and projectors, though they are becoming common. In general, infrastructure must become ubiquitous to generate cultural change. (See this post for more on ubiquity in education).

User interface: Several people mentioned the simplicity of the user interface. The fact that each topic module and each assignment has a unique URL makes it easy for the topic modules and assignments to link to each other and for a teacher to include one or many modules in a class. The presentations also follow a uniform format.

Still, the user interface is not as simple and standardized as turning a page in a book or looking up a term in the index. Some people mentioned that an etext user interface might be confusing to a student who was not comfortable with computers. For example, one person pointed out that a newcomer might have trouble differentiating between the links comprising a topic module (on the left side of the screen) and the cloud tag and links to other documents and sites on the right side. I will add that distinction to the "About our electronic text" page.

Focused content: Several people liked the relatively narrow focus of the annotated slide presentation format. The skills and concepts covered were explicitly stated, and the students knew what to study. For enrichment, they could follow the "resource" links at the end of each presentation. Each module is the rough equivalent of a section in a textbook chapter.

Multiple learning modes: Some students prefer the video presentations, others the PowerPoint presentations or the presentation transcripts. Some prefer reading from paper to reading from a screen. The modules are flexible in that a student can go through a presentation online, watch a video or print the transcript with its slide images for offline study.

I could easily provide audio recordings of the video sound tracks for podcast listening. I plan to add audio recordings of classroom presentations next term, which will provide another option -- a more spontaneous presentation plus classroom interaction.

Marginal notes: Marginal notes can be done by printing the transcript and writing on it or by keeping a notepad window open while watching a presentation online. There is definite room for improvement here -- one can imagine writing/drawing/dictating marginal notes while using a computer or tablet. (Dictated notes should be coupled with well integrated speech recognition to convert them to text).

Instructor convenience: One person commented that a modular etext makes it easier for a professor to develop a customized course. That is true, but most faculty do not worry about customization -- they simply select a textbook and build a course around the accompanying PowerPoint slides, test banks, etc.

Professors are used to adopting a textbook and letting it structure their course. The modular etext requires that they become editors and curators, not mere textbook adopters, and that takes time and thought.

Standards: The material for this course is browser based -- no special reading program is required. The material is in widely used formats -- HTML, pptx, docx, and Flash video. But, the electronic text is in its infancy, and I suspect that other standards for file formats, collaboration, and user interfaces will emerge.

Collaboration and community: An etext allows for collaboration among students, professors, and authors of the teaching material. This collaboration is particularly easy and scalable in the case of a modular etext, in which a community can form around a single module in the same way as Wikipedia users can focus on the articles they are interested in.

I had expected that the topic module and assignment comments would be used for this sort of collaboration and interaction, but they were not. Instead, students used an email list server and face-to-face contact in the classroom to give me feedback and to help each other. (We met twice a week). The comments or other collaboration mechanisms would be more important in a distant education or self-study setting.

Friday, May 06, 2011

The future of the (text)book

New media start by emulating old media, then evolve. Gutenberg's movable type was first used to print large bibles that, like their hand-copied predecessors, were kept in monasteries. It took about 50 years to evolve the form factor of the smaller "portable" book and still longer to settle on conventions for typography, punctuation, tables of contents, figures, indices, footnotes, and so forth. It took 80 years for early movies, shot with a relatively static camera, perhaps filming a stage play, to evolve into the fast-cutting style introduced by MTV.(Change is not always for the better :-).

The textbook is no different. A couple weeks ago, our class saw a digital book presentation by McGraw Hill. They are developing digital versions of their print books, starting with the best sellers and moving down the list. They supplement those with PowerPoint presentations, test banks, links to video, etc. geared to that textbook.

But, like the Gutenberg Bible, this is only the first step. I do not know where the textbook is headed, but I know we are not yet there. A few rough guesses as to future directions are that ...
  • There will be a place for collections of modular teaching material rather than integrated textbooks for an entire course -- the professor will become a curator or editor, assembling material as opposed to a textbook adopter, selecting a textbook.
  • Communities will form -- students, professors, and authors of learning material will be able to interact with each other, and their roles will blur.
  • We will have different user interfaces. We are beginning to see new options with touch interfaces on tablets, but will see more. For example, we should be able to use voice input with speech recognition for control and annotation.
  • Standards will evolve for formats, user interfaces, social platform interaction, etc., just as we evolved standards for book pagination, format, and punctuation. We are at version .1 today.
I could keep going on like this, but it is general and speculative. Many people are working diligently on the task of reinventing the book -- thinking about it and developing research prototypes and early standards and products. Here are some you might want to check out: