Guenter Hilmer - Phd Thesis - Glamorgan Dspace - University of ...

3.3 EFTECS at TLS-Layer 3 EFTECS
3.3 EFTECS at TLS-Layer
In the EFTECS an educational module is regarded as the superstructure of the
TLSs. Several instances of TLSs form an educational module.
Whereas the purpose of the EM-Layer is to describe the educational module in
general, the TLS-layer works one level below. Its main purpose is to use the
information about the identified Teaching and Learning Strategies and to provide
the author of the educational material with the possibility of “binding” together
the single components of the TLSs. The TLS-layer works on and manages the
relations between these single components. This process of linking together those
single TLS components in a specific way creates new instances of a TLS. For
example, a question, several answers, at least one correct answer and the type
of the TLS (Single Choice, Multiple Choice, Yes or No) build one instance of a
QA-TLS. Basically, the TLS-layer is working with and using single components
of the TLSs and is linking them together. This linking is a semantic linking not
a technical one in this context. This approach will result in a high number of
different TLS instances. However, the number of different sub-types of TLSs, e.g.
inductive or deductive lecture (cf. section 3.3.2) is limited.
At this point it is important to analyse which TLSs should be used in the EFTECS.
To make this decision it will be necessary to evaluate how different TLSs can be
created in a computing paradigm and how their specific meta-information has to
be used in the EFTECS. Several TLSs were identified in the literature review and
the ones that were selected for the EFTECS will now be introduced.
3.3.1 Question and Answer
The first TLS that was selected for an implementation into the EFTECS was the
QA-TLS. It was selected due to the fact that it is already used in several educa-
tional hypermedia projects [175]. Additionally, the single parts of this TLS were
easy to identify, based on the authors experience. Table 1 illustrates the identified
components of the QA-TLS which can be linked together to form the following
sub-types of a QA-TLS:
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