this, thinking skills are needed that must be trained
periodically so that students are able to develop and
assess quality arguments. Some experts suggest how
to train thinking skills related to strengthening
argumentation skills in the learning process: 1) train
students to solve problems (Norman, 1980; Hutchins,
1995). The problem in question is able to provoke
students to collect, organize; understand information
related to problem solving (Reiser et al., 2001).
(Norman, 1980), when cognitive knowledge is used
to manipulate information, cognitive knowledge is a
means to interact with problems. The quality of the
test argument students have (a) sufficient data in
guaranteeing a claim, (b) coherent explanation for a
phenomenon (Sandoval, 2003), and (c) combined
according to data references (Sandoval and
Millwood, 2005) synthesizing structure, and content.
Regarding content, this development instrument
offers a pattern of reinforcement so that students
produce arguments to uncover phenomena using
relevant theories, such as Archimedes' principles, and
ensure the statements produced are connected with
data. Explicitly a good instrument is capable of
forcing students to produce quality statements and
how well supported by data (Sandoval, 2003;
Sandoval and Reiser, 2004). The instrument helps
students focus on understanding knowledge and ways
of supporting statements (Driver et al., 1994).
However, further research is needed to analyze the
relationship between the structure and relevance of
statements, the adequacy and accuracy of statements
and learning strategies that strengthen computer-
assisted argumentation skills.
4 CONCLUSION
Students’ have the skills to submit statements that
focus on justifying the content or how well the
statement component supports the understanding of
students' concepts. Students have also succeeded in
generating arguments in response to problems related
to the phenomenon of "hollow wood will remain
afloat but the position of the top of the wood will be
the same as wood a." The success of students
involved in producing arguments facilitated by
argumentation skill instruments broadly and precisely
guides the thinking process of connecting relevant
information to a coherent explanation, and it is also
able to articulate and justify student explanations
regarding why objects float and sink. The results of
this study illustrate the importance of strengthening
argumentation skills in science. This study describes
students' arguments that provide a lot of information
about understanding concepts and students' ability to
communicate and justify written statements. This
study has also guided how to analyze student
argumentation production focusing on statement
structure, content, and relationships between
components.
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