Fig. 5.
Comparison of students’ opinion on usefulness of the
pathway and textbook
Fig. 6.
Students’ results in practical tests
Even though both educational material types were found
understandable and appropriate for learning, students presented
ambivalent attitude to the statement “
I have learned to evaluate
dental age
” (mean for textbook 3,5; mean for pathway 3,7 out
of 5). It seems that many students are not able to learn practical
skills without any help from the teacher’s side. They are used
to rote learning but do not know how to apply their knowledge
in practice.
Fig. 7.
Comparison of students’ in practical tests for the
experimental and control group
Many students in free-text questions underlined that the class
concerning dental age was interesting and informative for them
(mean 4,3 in 5-point scale) and that this was their irst encounter
with this form of learning (only 3 students stated that they used
educational decisions diagrams before). They claimed that they
would like to have more lessons like that one in future. They
also admitted that learning with computer was more interesting
for them (mean value 4,5) and more effective (mean value 3,8)
than learning from a textbook. In the free text comments some
students stated that Internet access gives them the opportunity
to learn anytime, anywhere and to reach interesting information
just-in-time. However, there were also opinions supporting learn
-
ing from traditional textbook rather than using computers. Some
students prefer textbooks because they can better concentrate
on learning – they perceived computer as a tool for entertainment
but not for learning.
Discussion
The obtained good effects in knowledge acquisition of human
developmental age based on dentition could be reached by the
application of appealing educational tools, such as virtual patients.
Students were very interested in the presented case “Adaś” – they
were studying eagerly and solved their tasks eficiently. The skills
learned by students during self-study scenario were also satisfy-
ing regardless the type of applied learning material (textbook
or pathway). Students in free-text answers underlined that the
dental pathway helped them in systematization of knowledge
and memorizing consecutive steps.
Evidence showing effectiveness of different kind of dia-
grams was summarized in several reviews and meta-analyses
(e.g. [3, 16, 20]). Graphic organizers are believed to pre-atten
-
tively convey information through spatial coniguration of com
-
ponents (a so-called visual argument) and the human ability to
discriminate individual components (chunks of information) from
each other [20]. A diagram can show at the same time many
key concepts helping the learner to build a schema of what is
to be learned. Relationships presented in the text are made by
graphic organizers very concrete and visible. Spatial arrangement
and verbal knowledge are transmitted by separate information-
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Educational decision diagrams in biomedical and life sciences…
-processing channels [13,17] and in that way the text, illustrated
by graphic organizers, despite containing more information does
not necessarily increase the cognitive load of the learner. Because
verbal and visuospatial knowledge is believed to be stored in
separate but potentially interlinked memory regions, the duality
of encoding may provide an additional retrieval path for both
kinds of information [16]. Despite these theoretical arguments
we failed to demonstrate the superiority of graphic organizers
over text description in this experiment. The reasons for that
may be various: small sample size, briefness of the knowledge
and skills evaluation or speciicity of the topic selected as source
for the pathway.
Worth mentioning is the fact that students perceived the
dental pathway rather as a good reminder of how to evaluate
dental age than a resource helpful in learning the algorithm.
Students claimed that they evaluated age of children easier
and faster having access both to test images and the pathway
at the same time. When it came to practical application of the
knowledge without access to the pathway, some of the students
failed to succeed. Both student groups – using pathways and
using textbooks – were not convinced about their own proiciency
in recognizing the dental age. On the one hand this observation
shows lack of abilities to apply the acquired knowledge in prac-
tice, on the other hand it indicates a strong need of a personal
contact between students and the teacher, who can emphasize
practical aspects of the presented knowledge.
The dental pathway discussed in this paper is just one exam-
ple of a series of pathways created using the Bit Pathways tool.
Other pathways in ontogenesis and sport medicine inform about
evaluation of the developmental age on the basis of skull sutures
and skeletal ossiication procedures or allow gender recognition
at different levels of body complexity (genetic gender, gonadal
gender, genital gender, somatic and psychical gender). These
pathways are still waiting to been veriied in practice.
Conclusions
The retaining effect of self-study was more visible in the theoreti-
cal part of the experiment than in the practical part. We did not
observe signiicant differences in the level of knowledge and
skills between tested learners studying from textbook and those
using a dental pathway. Many students appreciate and prefer
modern didactic methods accessible by computer, but it had
no apparent effect on the learning outcome. We observed also
students who gave priority to systematic learning from textbook
over innovative techniques.
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