presentation tool called Online Whiteboard to
support such kind of group learning activity based
on Web.
In the following sections, we begin with a review
of related research works, and then describe the
concept of our proposed Online Whiteboard, its
design, and the implementation in distance learning
using WebLS.
2 RELATED RESEARCHES
Recently there are some similar works on Online
Whiteboard developed by many vendor of software,
such as NetMeeting (Microsoft), Breeze
(Macromedia), and Lotus Sametime (IBM). In
general, the Online Whiteboard tool in these
software applications includes the functions as
shown in table 1.
Table 1: Whiteboard System Comparison.
Function Net
Meeting
Breeze Same
Time
Drawing ○ ○ ○
Multi Pages ○ ○ ○
Navigation ○ ○ ○
Saving contents ○ ○ ○
Standalone and
Group mode
○ ○ ○
Annotation per page × ○ ×
Asynchronous Q&A
mode
× × ×
○: Available ×: No Function
All of the above tools are basically targeted for
supporting general purpose meeting, but not
specifically for conducting distance learning.
Therefore, they have lack of functions in supporting
education activity. For example, there is no crucial
function of asynchronous question-answer (Q&A)
related to the content of Whiteboard, because this
kind of function is necessary for supporting self-
paced learning after finishing presentation. Learning
on a theme should be carried out mutually during
and after online presentation in order to improve
students’ knowledge achievement. The Macromedia
Breeze has a simple annotation function just for
general content of Whiteboard. It is necessary to
facilitate an annotation function for each page by
which the presenter can augment the content with
further description, in order to clarify the
relationship between the annotation description and
the page content on the Whiteboard
.
3 CONCEPT OF OUR SYSTEM
In the higher education level such as postgraduate
program, the collaboration between teachers and
students plays important role to share their
knowledge and to change opinion each other about a
theme. This method not only encourages students to
show and to explain what they are thinking in mind,
but also it is useful to correct each other about their
accepted knowledge. Without conducting
collaboration the accepted knowledge would be
stagnant and have a lack of correctness.
One of the most important collaboration methods
in the higher education is presentation. Many
learning materials can be used for presentation, such
as journal, research report, et al. After learning these
learning materials, students can make presentation
based on their views on these materials. During the
course of presentation, there would have a
discussion organized by teacher, in order to change
opinions, correct understanding and extent the
relative knowledge by each other about a theme. The
discussion on the same theme can be continued in
different time asynchronously.
Therefore, our research concentrates on
developing a tool, called Online Whiteboard,
supporting such kind of learning activity. This tool
can be executed at many platforms of operating
system and network, in order to support Web-Based
E-Learning System. This kind of tool is necessary in
the distance learning system using general network
platform, such as Internet or intranet, so that many
users who will act as students or teachers have the
same chance to use it for conducting learning
activities in real time. This is the basic consideration
of our Online Whiteboard concept. That is, many
users are allowed to participate in collaborative E-
Learning easily via internet/intranet with different
bandwidth of network.
In general, there are two types of distance
learning methods: synchronous and asynchronous
system (Haruki, 2002). Both of them have their
individual advantages and disadvantages. The
presentation using Online Whiteboard is a
synchronous process to conduct learning process in
the same time. Moreover, it is also an asynchronous
process to review and reuse the results of
presentation. In the future, with the better
infrastructure of network, there would have more
demands on the real time software applications of E-
Learning, which should be considered in the
implementation of Online Whiteboard.
When developing Online Whiteboard, we have
solved the problem of existing different platforms of
network infrastructure by considering the different
network bandwidth, that can influence the access of
various speed of network
.
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