“The system of key concepts contains the most important key concepts related
to the development tasks of knowledge areas and their vertical hierarchy as well as
the
links of basic key concepts of different knowledge areas. When you try to identify
the
key concepts of a field of knowledge, you should ask the following questions: Which
are the concepts that are the nodes of the concept net and can be related to many
other concepts? Which are the concepts that necessarily keep re-appearing in different
contexts when interpreting what you have learnt before? Which are the concepts that
arrange specific facts in structures, which contribute to interpreting and apprehending
new information and experience? Which are the concepts that - if you are unfamiliar
with and unaware of - inhibits you in systematizing various items of knowledge or
sensibly
utilizing them?” [8] One of the most important of these concepts is the document.
