Sunday, 18 March 2012

Selecting Distance Learning Technologies



       Various technology tools exist that can enhance face-to-face instruction, blended learning, and asynchronous and collaborative learning in the distance learning environment. Taking the following scenario into consideration:

Example 2: Interactive Tours

       A high school history teacher, located on the west coast of the United States, wants to showcase to her students new exhibits being held at two prominent New York City museums. The teacher wants her students to take a "tour" of the museums and be able to interact with the museum curators, as well as see the art work on display. Afterward, the teacher would like to choose two pieces of artwork from each exhibit and have the students participate in a group critique of the individual work of art. As a novice of distance learning and distance learning technologies, the teacher turned to the school district’s instructional designer for assistance. In the role of the instructional designer, what distance learning technologies would you suggest the teacher use to provide the best learning experience for her students?

        As an instructional designer, when reviewing the above scenario, since the teacher and student is separated by time and distance, it is best to use audio/video technology to give the distance learners a better visual concept of the tour. In addition to the Course Management System (CMS) technology tool, Audio and Video Streaming can be used to deliver the video content of the museum tour as well as display pictures of the art work. A discussion board might also be necessary for the students to use as a discussion forum to critique the content. If the students will work in groups then the media and technology selected must be able to allow learner to learner, and teacher to learner interaction.  Students separated by time and geographical location, can log into the discussion forum at their convenient to participate, they can also video the view multiple times.





Audio and Video Streaming






       Digital technologies for learning, such as self-paced learning modules, multimedia case studies, simulations, video tutorials, and communications and assessment tools, can increase the array of learning opportunities for adult students and their teachers.  The use of video in teaching and learning is a common practice in education today. As learning online becomes more of a common practice in education, streaming video and audio will play a bigger role in delivering course materials to online learners. This form of technology brings courses alive by allowing online learners to use their visual and auditory senses.” Hartsell, T., & Yuen, S. (2006). Streaming media such as video and audio can help learners understand complex concepts and procedures that are difficult to explain with simply text and graphics (Klass, 2003). This ability is important for distance learning instruction in that most online courses still use primarily text-based materials to deliver instruction, and multimedia can add teractivity to these stagnant text-based materials (Michelich, 2002). Cognitivists believe that the addition of multimedia can help improve and augment the learning process of students as they see the concept in action (Michelich, 2002). By using visual and auditory messages, students can process the information quicker, which in turn, helps foster their learning acquisition of the material. The old saying that “a picture is worth a thousand words” holds true in this case in that moving images add authenticity and reality to the learning context (Joint Information Systems Committee, 2002). Video’s face-to-face context engages the students, and can effectively capture cultural context to enhance the learning experience (Stilborne & MacGibbon, 2001). In addition, a moving image can help students visualize a process or see how something works. Video can take tacit information or knowledge that may be too difficult to describe in text into an articulate, vivid description through the use of images. Furthermore, videos have visual appeal that can evoke emotional reactions from students that would help in increasing motivation (Joint Information Systems Committee). With these benefits in mind, streaming video is a new opportunity for educators to bring online courses alive. Before creating digital video for streaming purposes, the instructor needs to be certain that several factors exist. These include ensuring that the developer has: (a) made the video in the proper format, (b) access to a streaming media server, and (c) adequate bandwidth to download and upload the video file. The hardware for creating video streaming materials requires much of the same equipment for creating traditional digital video no matter how the material is being used on the Web. These hardware and software components include a video camera (analog or digital), video capture card (e.g., Pinnancle System, AverMedia), video editing program (e.g., Adobe Premiere, Final Cut Pro), video encoding software (e.g., Real Producer Plus, Discreet Cleaner), a computer with a lot of storage space to store the video files, and a high-speed network connection (Zachariah, 2001). Other equipment considerations include (a) obtaining a tripod for reducing the amount of movement that helps reduce the amount of work the encoder will have to do to compensate for the movement, (b) obtaining a directional microphone that is windproof to help reduce background noise, and (c)
ensuring adequate lighting (Joint Information Systems Committee, 2002).



Advantages of using Streaming Video

       There are many advantages of using streaming video. Some of the advantages include (a) instant play, (b) distributing live events, (c) delivering long-forms of media, (d) multicasting to multiple viewers, and e) the easy creation of streamed files (Schmerbeck, 2000; Weiser, 2002). Other advantages that streaming video files can offer educators are creating visually driven materials that are more appealing to learners, helping educators handle volatile or quickly outdated materials (e.g., CD-ROMs, tape) that can be stored into a searchable database, and create synchronized presentations by having audio accompany still images, graphics, or text (College of Extended Education, 2003). However, individual control of pacing is the main advantage of incorporating streamed videos into distance learning courses. Control includes access, choice, and manipulation by the students (Joint Information Systems Committee, 2002). With streamed videos, students can access the material asynchronously and independent of their location. Students are no longer bounded by the traditional classroom or the library to view visual materials provided by the instructor. With streamed videos, students can access the visual materials at home and at anytime. Another control element is the choice over which material to observe on-demand. Finally, being in charge of when to start, pause, skip, and review the visual material is another way that students can contend with the material. In short, the primary advantage of streaming video is the ability for students to self-pace their learning.



Limitations of using Streaming Video

      However, there are drawbacks of streaming video that the instructor must consider. Inadequate bandwidth to retrieve streamed files is one limitation (Reed, 2003; Schmerbeck, 2000). Video streams can be bandwidth intensive. Depending upon the Internet traffic, users who have 56K modems or even cable/DSL connections may have difficulty in terms of retrieving and playing streamed video. Internet congestion can cause playback delays, and even living on a particular road or street can influence the reception of streamed video connection (College of Extended Education, 2003). In addition, competing technologies to control standards is another obstacle for video streaming. Different vendors have set their own standards in terms of video streaming and this has caused a problem in that if a user does not have the right player, the video cannot be seen. Finally, lack of training and technical support can prevent effective video streaming use (Burnett, Maue, & McKaveney, 2002). If support and training are not readily available, it is difficult to sustain streaming video in academic institutions because of limited access to technology and knowledgeable experts who can assist in maintaining and developing streamed video (Shepard, 2004). Equipment requirements, technical support, and network infrastructures need to be firmly in place before any quality video streaming projects can occur.  Therefore, it is vital that these resources are made available to take advantage of what streaming video can offer to education.  Video streaming allows online instructors the opportunity to deliver alternative course materials to students who are not campus-bound.


Discussion Board

     A discussion board is a tool which allows groups to communicate online. It is quite similar to e-mail, but is separate from your e-mail account and is accessed, stored and organized centrally. The entire group can read all the messages. You can read old messages or post new messages at any time.  A discussion board is made up of ‘forums’ – folders containing messages on a particular subject, ‘threads’ – each thread is a series of messages about the same topic, and ‘messages’ – each message is an individual contribution to a conversation (like a single e-mail). Online discussions are often seen as a component of distance learning; however they can also be useful for on-campus enhancement in a variety of ways including:

·        
       providing materials for seminar work, in order to optimize class time

·         extending time for discussion beyond scheduled class time to allow for reflection and further comment

·         requiring students to move beyond listening in a lecture, engaging them in critical debate on the topic

·         providing an outlet for students to pose questions and receive feedback, not only from the instructor but also from other participants

·         allowing students to share information or references with each other (book reviews, websites etc)


Advantages of using a discussion board

       Discussion boards can be used in many ways, but some principle advantages exist however you use them. The main benefit of asynchronous (not real time communication is that you can join and read forums at any time convenient to you, catching up with messages already posted. You can reply at once, or go away and think about your answer before coming back to reply; or indeed, as in a real discussion, you can simply listen without contributing at all. Discussion boards are generally archived, so you can print a particularly interesting or relevant discussion, equally you can return to it at a later point when further contributions may have been made.

       Discussion boards can be seen as impersonal, with no face-to-face interaction, however the level playing field they create allows shyer students to contribute as equally as more dominant personalities in the classroom. Should it prove necessary, individual users can be temporarily ‘blocked’ from posting to allow others to have their say. Additional features, such as enabling ‘anonymous’ posting, ensure that ‘stupid’ questions can be asked with impunity.

       One of the fundamental outcomes found by the law school at Durham in its use of discussion boards is the preparedness of participants to collaborate – not something expected of traditionally competitive students.



                                                              Chat room                                                                                      


                                                                 Discussion board



The diagram below shows some methods of communications that can be used.


“The instructional environment should be viewed as a system, a relationship among all the components of that system – the instructor, the learners, the material, and the technology.”  Simonson, M.,  Smaldino, S., Albright, M., & Zvacek, S. (2012).




Reference



Hartsell, T., & Yuen, S. (2006). Video streaming in online learning. AACEJournal, 14(1), 31-43.  Retrieved on March 10, 2012, from  http://digitalvideooverview.weebly.com/uploads/2/0/1/9/2019204/article_6152.pdf



Joint Information Systems Committee. (2002). Video streaming: A guide for educational development. Manchester, UK: JISC Click and Go Video Project.


Klass, B. (March 15, 2005). Streaming media in higher education: Possibilities and pitfalls. Campus Technology (in print). Retrieved November 4, 2005, from http://www.campus-technology.com


Michelich, V. (2002). Streaming media to enhance teaching and improve learning. The Technology    Source. Retrieved November 4, 2005 from http://ts.mivu.org/default.asp?show=article&id=941


 Shepard, K. (2004). Questioning, promoting, and evaluating the use of streaming video to support student learning. In J.J. Hirschbuhl & D. Bishop (Eds.), Computers in education (pp. 124-130). Guilford, CT: TjMcGraw-Hill/Dushkin.


Simonson, M., Smaldino, S., Albright, M., & Zvacek, S. (2012). Teaching and learning at a distance: Foundations of distance education (5th ed.) Boston, MA: Pearson.

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