parts of our knowledge". Ennis pointed out, "The
definition of critical thinking is reflective thinking by
emphasizing decision-making about what to believe
or do". Implicitly, critical thinkers evaluate the
implicit thoughts of what they hear and read, examine
the process of self-thinking when writing, solving
problems, making decisions, or, or developing a
project (Surya, 2013: 159). Alec Fisher (Ennis) stated
"Critical thinking is a sensible and reflective thinking
that focuses on deciding what to believe or do."
According to Webster's New Encyclopedic All
New 1994 Edition cit, Amri (2010: 62), "critical" is
"implement or practice the careful assessment and
objective" so that "critical thinking" can be
interpreted as thinking that requires precision in
making decisions.
Another definition given by Ennis (Suryanti et al,
2008: 31) is critical thinking is a process that aims to
make sensible decisions about what we believe and
what we do. Critical thinking is one step higher level
thinking into four groups which include problem
solving, decision making, critical thinking, and
creative thinking (Amri & Ahmadi, 2010). Wijaya
(Suryanti et al, 2008) says that critical thinking skills
as part of thinking skills should be owned by every
member of society, because there are so many
problems in life that must be done and resolved (Amri
and Ahmadi, 2012: 66).
Based on the above opinion it can be concluded
that critical thinking describes an active process of
thinking, or not just take for granted the ideas of
others. Critical thinking shows that there is reason to
believe in something and for that ability is part of the
critical thinking skills that learners must have in order
to solve all problems.
Hendra Surya (2012: 179) stated that critical
thinking steps that can be grouped into 3 namely: (1)
Recognition of problems, assessing information, and
solving problems or drawing conclusions, (2) Assess
relevant information, (3) Troubleshooting or drawing
conclusions.
Wahab Jufri (2013: 104) states that the indicator
of critical thinking skills is to formulate problems,
give arguments, deduce, induce, evaluate, make
decisions and determine actions. Facione (1990) in
Liliasari and Tawil (2013: 9) identified 6 critical
thinking skills, namely interpretation, analysis,
evaluation, inference, explanation, and self
regulation. While Henri (1991) which quoted by
Liliasari and Tawil (2013: 9) identifies critical
thinking skills in 5 dimensions, namely basic
clarification, in-depth clarification, inference,
assessment, strategy, and tactics.
Based on the aspect of students' critical thinking
skills which have been proposed, this research uses
aspects of critical thinking skills according to
Facione's (1990) opinion in Liliasari and Tawil
(2013: 9) is interpretation, analysis, evaluation,
inference, explanation, and self regulation.
2.2 Review of Learning Media
2.2.1 Definition of Learning Media
Media serves as an intermediary in the dissemination
of information from the sender of information to the
recipient information. According to Anderson which
quoted by Sukirman (2012: 28) Media learning is a
medium that allows the realization of a direct
relationship between the work of a subject developer
with the students. Learning media is a means or
educational tool that can be used as an intermediary
in the learning process to enhance effectiveness and
efficiency in achieving teaching objectives (Sanaky,
2013: 4). Meanwhile, according to Gerlach & Ely that
when understood in broad outline is human, material,
or events that build conditions that make students able
to acquire knowledge, skills, or attitudes. In
particular, the meaning of media in teaching and
learning process tends to be interpreted as graphic,
photographic, or electronic tools to capture, process
and rearrange visual or verbal information (Arsyad,
2013: 3). Winkell quotes from De Corte (2005) who
stated that instructional media is a non-personal (non-
human) means used or provided by faculty who play
an important role in teaching and learning, to achieve
the instructional objectives.
Based on the above opinion, it can be drawn
understanding of instructional media which is
anything that can be used to communicate the
message to students centered on the students so that
students are more motivated to learn through
discussion of material that students are interested in.
2.2.2 Characteristics of Learning Media
According to Bretz which quoted by Sadirman (2006:
2) identifies the main characteristics of instructional
media, among others: (1) Sound, is distinguished also
be a broadcast media (telecommunications) and the
recording media. 2) Visual, divided into three namely
images, lines, and symbols that are one continuum of
the form that can be caught by the sense of sight.
According to Gerlach and Ely which quoted by
Arsyad (2013: 15-17), there are three characteristics
of the media, namely: Marks fixatives (fixative
Digital Storytelling and Think-Pair-Share to Improve the Ability of Critical Thinking
185