Category Archives: Ed Tech 513- Multimedia

Ed Tech 513- Coherence Principle Analysis

Jon Freer
Ed Tech 513
Coherence Principle Analysis

Coherence Principle Description

The coherence principle essentially states that superfluous material, in the form of visuals, audio or text, should be avoided when preparing a multimedia lesson (Clark & Mayer, 2008, p. 153).  In each of these cases, there is support for the idea that the extra information that is not directly related to the learning objectives can distract the learner and hinder the learning process.

The most important aspects of the coherence principles focus on the avoidance of extraneous material.  In terms of audio, it is best to avoid the inclusion of background music or sounds in a lesson.  With a limit to the amount of working memory a learner has, the background music or other sounds can lead to overload of the working memory and hinder learning.  Eliminating or avoiding superfluous graphics is also recommended. While graphics related to the learning objectives are important to include, adding graphics not related to those objectives for the purpose of “spicing up” the lesson causes the learner to divide their attention between the learning material and the graphics.  When graphics are used, they should be simple in nature to improve the learning process.  Detailed graphics may depress learning, especially among beginners in a particular subject.  Lastly, it is best to avoid the use of extra words.  Words added to interest learners, expand on ideas or go into technical detail can all be distracting for the learners and hinder the learning process.

Examples of Coherence Principle

An example of successful adherence of  the coherence principle is the following slide from the instructor materials from Campbell Biology, the support site for the Biology textbook by Neil Campbell.  The slide presents a clearly identifies the “key to flight” as “aerodynamic structure and provides an image that illustrates this structure in a simple, relatable way.  In addition, the slide avoids going into the technical details of the airfoil in either words or images.  This allows the learner to come away with the simple idea that it is the structure of a wing that allows a bird to overcome gravity.

Another source provides an example of suspect adherence to the coherence principle.  In the slide below from a slideshow on evolution, focus is on Lamarck’s contribution of evolution theory.  While the limited text implies that this slideshow is being used while a teacher narrates, there is also the inclusion of a picture (perhaps one of the students) and the words “Are you still paying Attention?”  Both of these seem to be an attempt to retain the attention of students, but as they do not directly relate to the information being related, serve only to distract and disrupt the learning process.  They most certainly do not add to the learning experience for the student, nor do they effectively make the material more interesting.

Relationship of Coherence Principle to Other Multimedia Principles

Prior principles discussed include the multimedia principle, which states that learners benefit from having words and images together, rather than words alone, and the contiguity principle that states that those included images should be relatively close to the words to which they are related.  In short, these principles state that images should be included and be close to the words they are illustrating.  The relationship this has to the coherence principle is something like a reality check for image inclusion (or other media such as audio).  It is important to include multiple forms of media to allow users to access both auditory and visual learning channels, however, it is equally important to be sure that the images (or audio) serve a specific purpose.  Images must be related to the learning objective.  If they are not, the benefits of adherence to the multimedia principle may, in fact, be contradicted by the lack of adherence to the coherence principle.

Coherence Principle Related to Psychological Theories

Beginning with arousal theory, many instructors seem to face the challenge of keeping the attention of the learner.  To do this, they make attempts to grab or keep attention through the inclusion of “exciting” images, “fun” audio or “interesting” facts or stories.  Arousal theory assumes that the learners will become emotionally engaged and, therefore, have greater interest and focus in the main learning material (Clark & Mayer, 2008, p. 156).  In many ways, it seems like arousal theory makes perfect sense.  If I am attentive to the screen, thanks to the included media, I must be attentive to the topic at hand. Cognitive theory, however, contradicts this.  Essentially, it comes down to the idea that we must process information through our working memory and that working memory has limited capacity. Inclusion of images that do not specifically and coherently relate to the learning objectives will utilize some of the working memory space and may overload the working memory.  This would lead to decreased learning, rather than increased.  The dual-coding theory goes on to imply that improved learning comes from utilizing both the auditory and visual channels (Moreno & Mayer, 2000).  An example of this might be using an image along with narrated text.

My View of the Coherence Principle

The aspect of the coherence principle that strikes me as being right on target is that the illustrations used in a multimedia presentation should be simple in nature.  As a science teacher, I am faced with the constant challenge of helping students to better understand complex systems.  Clearly, images and video go a long way towards helping a student visualize a process such as muscle contraction.  However, there exists a wide variety of diagrams that can show this.  Diagrams that are simple and focus on few specific details help beginner students to pay attention to the process in general without getting lost in the details.

The one aspect of this idea that I would say warrants qualification is that not all students possess the same knowledge base.  Advanced students, who may already have an understanding of the basic ideas, would likely benefit, or at least not be distracted by, a more detailed view of this same material.  They key to this is that the advanced students have prior understanding of the material to link the details to, whereas the beginner students do not.

References

Campbell, N. A., & Reece, J. B. (2001). Campbell Biology. San Francisco, Calif: Benjamin Cummings.

Clark, R. C., & Mayer, R. E. (2008). E-learning and the science of instruction, 2nd edition. Pfeiffer: San Francisco, CA.

Mayer, R. E. (1999). Multimedia aids to problem-solving transfer. International Journal of Educational Research, 31(7), 611-623.

Moreno, R., & Mayer, R. E. (2000). A learner-centered approach to multimedia explanations: Deriving instructional design principles from cognitive theory. Interactive Multimedia Electronic Journal of Computer-Enhanced Learning, 2(2), 2004-07.

Links

Campbell Biology Online (subscription needed)

Southgate Schools Biology presentations

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EdTech 513- Screencasting Project

For this project, I created a screencast in which the learners go through a worked example of drawing a Lewis structure. Because the video is a flash video, I had trouble embedding it on this blog. So, I created a Learning Log on Blogger that allows the interactive part to work.  Here is a link to that post.

The content of that post is below:

This screen cast is a worked example for drawing a Lewis structure in Chemistry class.  The video takes a Chemistry student through a review of how to draw a Lewis Structure. It then gives the learner a chance to do an example on their own.  I wanted to create an interactive experience for the learner in which they are able to pace the work on their own.  Unfortunately, I ran into a slew of issues with this.  In the end, I needed to place the video here in Blogger rather than WordPress.  I know there are better workarounds to accomplish what I was looking for, but time was an issue.  I do plan to explore the technology needed to make links within videos a bit more in the future.

Here is the worked example (note, to click “Continue” the video must be watched in full screen format, otherwise the progress bar masks it.) (This is where the interactive video should go, but it doesn’t work in WordPress.

For this worked example, I wanted to begin by giving the the learners a look at what a Lewis structure is to to familiarize them with the vocabulary and the symbols involved.  This pre-training would allow them to focus on the procedure, rather than wondering about the symbols.  I then proceeded to work through the example step by step.  At each step, the learner has the control of whether they feel confidence enough to continue or if they needed to review that step again.  Using the segmenting principle puts control of the learning in the users hands. At the end, the learner’s are given a summary of the steps and the option to replay the lesson as a whole or to move on to try an example on their own.  The example ends with the option of seeing the actual solution.  This example, would help a learner achieve far transfer for the material covered.

One thing to note is that I had some trouble deciding who the learner actually was.  I decided to create a video that I could share with my Chemistry class after this material had been presented.  It is not meant to be a replacement lecture, but rather a step-by-step worked example of something they should be somewhat familiar with.

EdTech 513- Digital Storytelling Project

For this project, we reviewed some of the elements that make for a good digital story and then set to work in creating our own. My story is about a local legend surrounding a a lost stash of gold.  It is a story of the desire to push into a world of adventure and the difficulties we have in doing that.  I found this project challenging in the very best sense of the word.  Technically I struggled at times (especially when it comes to the so-called “Ken Burns” effect), but it all came together eventually.  Even as I finished, I felt that I really wanted to spend more time smoothing out some of the wrinkles that I see in the finished project.  I can see  how filmmakers can get lost in their work.  For me, I simply ran out of time.  Maybe I’ll work on it again someday…

It was fun to develop a story that is personal. Having looked through a number of the examples given, I was struck by the fact that so many has a sad theme.  In developing my own story, I wanted to be positive and see if I could create a compelling story that still had meaning.  In the end, I was happy with the story as it turned out.  Because it was so personal and real, the application of the personalization principle was quite natural to use.  Using a natural, conversational tone allows viewers to get a bit lost, hopefully, in the story being told.  It allows for a deeper connection with the message of the story.

As far as the use of digital storytelling goes, I see a great deal of potential for its use in a classroom.   While I did have some difficulty with the technical aspects of the story, with some practice, it seems easy enough to pass the “how-to’s” along to students.  I can envision English classes analyzing novels or making short pieces about Shakespearean soliloquies.  Foreign Language classes could easily make use of this concept by having students create stories in the language they are studying.  Overall, this seems like a fairly versatile type of project.

Jon

Coherence Analysis

Coherence Principle Description

The coherence principle essentially states that superfluous material, in the form of visuals, audio or text, should be avoided when preparing a multimedia lesson (Clark & Mayer, 2008, p. 153).  In each of these cases, there is support for the idea that the extra information that is not directly related to the learning objectives can distract the learner and hinder the learning process.

The most important aspects of the coherence principles focus on the avoidance of extraneous material.  In terms of audio, it is best to avoid the inclusion of background music or sounds in a lesson.  With a limit to the amount of working memory a learner has, the background music or other sounds can lead to overload of the working memory and hinder learning.  Eliminating or avoiding superfluous graphics is also recommended. While graphics related to the learning objectives are important to include, adding graphics not related to those objectives for the purpose of “spicing up” the lesson causes the learner to divide their attention between the learning material and the graphics.  When graphics are used, they should be simple in nature to improve the learning process.  Detailed graphics may depress learning, especially among beginners in a particular subject.  Lastly, it is best to avoid the use of extra words.  Words added to interest learners, expand on ideas or go into technical detail can all be distracting for the learners and hinder the learning process.

Examples of Coherence Principle

An example of successful adherence of  the coherence principle is the following slide from the instructor materials from Campbell Biology, the support site for the Biology textbook by Neil Campbell.  The slide presents a clearly identifies the “key to flight” as “aerodynamic structure and provides an image that illustrates this structure in a simple, relatable way.  In addition, the slide avoids going into the technical details of the airfoil in either words or images.  This allows the learner to come away with the simple idea that it is the structure of a wing that allows a bird to overcome gravity.

 

Another source provides an example of suspect adherence to the coherence principle.  In the slide below from a slideshow on evolution, focus is on Lamarck’s contribution of evolution theory.  While the limited text implies that this slideshow is being used while a teacher narrates, there is also the inclusion of a picture (perhaps one of the students) and the words “Are you still paying Attention?”  Both of these seem to be an attempt to retain the attention of students, but as they do not directly relate to the information being related, serve only to distract and disrupt the learning process.  They most certainly do not add to the learning experience for the student, nor do they effectively make the material more interesting.


Relationship of Coherence Principle to Other Multimedia Principles

Prior principles discussed include the multimedia principle, which states that learners benefit from having words and images together, rather than words alone, and the contiguity principle that states that those included images should be relatively close to the words to which they are related.  In short, these principles state that images should be included and be close to the words they are illustrating.  The relationship this has to the coherence principle is something like a reality check for image inclusion (or other media such as audio).  It is important to include multiple forms of media to allow users to access both auditory and visual learning channels, however, it is equally important to be sure that the images (or audio) serve a specific purpose.  Images must be related to the learning objective.  If they are not, the benefits of adherence to the multimedia principle may, in fact, be contradicted by the lack of adherence to the coherence principle.

Coherence Principle Related to Psychological Theories

Beginning with arousal theory, many instructors seem to face the challenge of keeping the attention of the learner.  To do this, they make attempts to grab or keep attention through the inclusion of “exciting” images, “fun” audio or “interesting” facts or stories.  Arousal theory assumes that the learners will become emotionally engaged and, therefore, have greater interest and focus in the main learning material (Clark & Mayer, 2008, p. 156).  In many ways, it seems like arousal theory makes perfect sense.  If I am attentive to the screen, thanks to the included media, I must be attentive to the topic at hand. Cognitive theory, however, contradicts this.  Essentially, it comes down to the idea that we must process information through our working memory and that working memory has limited capacity. Inclusion of images that do not specifically and coherently relate to the learning objectives will utilize some of the working memory space and may overload the working memory.  This would lead to decreased learning, rather than increased.  The dual-coding theory goes on to imply that improved learning comes from utilizing both the auditory and visual channels (Moreno & Mayer, 2000).  An example of this might be using an image along with narrated text.

My View of the Coherence Principle

The aspect of the coherence principle that strikes me as being right on target is that the illustrations used in a multimedia presentation should be simple in nature.  As a science teacher, I am faced with the constant challenge of helping students to better understand complex systems.  Clearly, images and video go a long way towards helping a student visualize a process such as muscle contraction.  However, there exists a wide variety of diagrams that can show this.  Diagrams that are simple and focus on few specific details help beginner students to pay attention to the process in general without getting lost in the details.

The one aspect of this idea that I would say warrants qualification is that not all students possess the same knowledge base.  Advanced students, who may already have an understanding of the basic ideas, would likely benefit, or at least not be distracted by, a more detailed view of this same material.  They key to this is that the advanced students have prior understanding of the material to link the details to, whereas the beginner students do not.

 

References

Campbell, N. A., & Reece, J. B. (2001). Campbell Biology. San Francisco, Calif: Benjamin Cummings.

Clark, R. C., & Mayer, R. E. (2008). E-learning and the science of instruction, 2nd edition. Pfeiffer: San Francisco, CA.

Mayer, R. E. (1999). Multimedia aids to problem-solving transfer. International Journal of Educational Research, 31(7), 611-623.

Moreno, R., & Mayer, R. E. (2000). A learner-centered approach to multimedia explanations: Deriving instructional design principles from cognitive theory. Interactive Multimedia Electronic Journal of Computer-Enhanced Learning, 2(2), 2004-07.

 

Links

Campbell Biology Online (subscription needed)

Southgate Schools Biology presentations

Science/Fiction Podcast- Episode 1: Extinct Species, Zombies, Time Travel and Tricorders

For this assignment, I created a podcast called “Science/Fiction” (or perhaps Science-Slash-Fiction” to add emphasis to the slash).  The idea behind this podcast was to spark the imagination of the listeners.  As a Science teacher, all too often I see student that become disenchanted with science because so much of it seems to be fact memorization.  While I can sit back and be amazed by the work of Charles Darwin or Gregor Mendel, student don’t see it that way.  So, I wanted to create a podcast that reminded listeners that there is a connection between real-world science and science fiction.  Through this series, listeners will see connections between dreams of the past and the realities of the future (or present).

In the pilot episode, the four topics I chose to look at were the possibility of bringing extinct species back to life using their DNA, parasites that infect the brain of their hosts turning them into zombies, the ins and outs of time travel and science fiction devices that will soon be a reality.

This was a very enjoyable assignment.  While I can’t say I am natural at podcasting, I do feel like the process is a great learning experience that helps you delve deeply into topics that are interesting.  I would love to make this particular podcast a series in which my students are the contributors.

Creating My Learning Log

Welcome to my learning log for my work at Boise State University.  This post is a simple one demonstrating that I have my learning log up and running and have the proper AECT standards applied. From here on my work in Multimedia will be shared via this blog.