2.1 Concept Understanding
Understanding is one's ability to understand or
understand something. In other words, understanding
is knowing about something and can see it in various
aspects. Someone is said to understand something if
he can provide an explanation and imitate it by using
his own words. Anderson et al. (2014) stated that
understanding is defined as constructing the meaning
of instructional messages, including oral, written, and
graphic communication. This opinion explains that a
person is said to understand something if they are able
to construct the meaning of teaching messages such
as oral communication, writing, and graphics. A
person is able to understand a new knowledge when
he is able to build a relationship between the newly
integrated knowledge and the cognitive scheme that
already exists in him.
Understanding consists of seven types, namely
interpreting, exemplifying, classifying, summarizing,
inferring, comparing, and explaining. The seven types
of understanding are explained as follows: 1)
Interpreting occurs when students are able to convert
information from one representation to another.
Interpretation includes the conversion of words into
words, images into words, and so on; 2)
Exemplifying occurs when students are able to
provide specific examples or examples of general
concepts or principles. Exemplifying involves finding
the characteristics of a general concept or principle;
3) Classifying occurs when students recognize that
something (a particular instance or event) belongs to
a particular category (eg concept or principle).
Classifying includes the discovery of relevant
characteristics or patterns, which match specific
examples and concepts or principles;
4) Summarizing occurs when students are able to
propose a single statement that represents the
presentation of information or a summary of a general
theme. Summarizing includes the construction of an
information representation, making a summary, such
as determining the main theme or topic; 5) Inferring,
including finding patterns and a series of examples or
events. Summing up occurs when students are able to
summarize concepts or principles which consist of a
series of examples or events through coding the
relevant characteristics of each event;
6) Comparing occurs when students find similarities
and differences between two or more objects, events,
problems, or situations; and 7) Explaining occurs
when students are able to build and use a causal model
of a system. Models can be derived from formal
theories, or can be based on research or experience. A
complete explanation involves constructing a causal
model, including every major part of the system or
every major event in a series, and using a model to
determine changes in one part of the system or
relationship in a series that affect changes in other
parts.
Rosser in Sagala (2014) stated that concepts are
"an abstraction that represents a class of objects,
events, activities, or relationships that have the same
attributes". People experience different stimuli, form
concepts according to groupings - grouping stimulus
in a certain way. These concepts are abstractions
based on experience, and because no two people have
exactly the same experience, the concepts that people
form may differ.
Klausmeier in Dahar (2011) suggested that there
are four levels of concept achievement. These levels
appear in an invariant sequence. People arrive at the
highest level of achievement at different speeds and
there are concepts that have never been reached at the
highest level. Four levels of concept achievement
according to Klausmeier, namely: 1) Concrete
level. We can conclude that someone has reached the
concept at a concrete level if the person knows an
object that he has faced; 2) Level of identity. At the
level of identity, a person will recognize an object: (a)
after a period of time, (b) if the person has a different
spatial orientation to the object, (c) if the object is
determined by a different sensory method, for
example knowing a the ball by touching the ball is not
by looking at it; 3) Level of classification. At the
classification level, students recognize the equations
of two different examples of the same class. Although
students cannot determine attribute criteria or
determine words that can represent the concepts, they
can classify examples and non-concept examples; and
4) formal level. For concept achievement at a formal
level, students must be able to determine attributes
that can limit the concepts.
According to Asep Jihad and Abdul Haris (2012)
understanding of concept is a competency
demonstrated by students in understanding the
concept and in performing procedures in a flexible,
accurate, efficient and appropriate manner. Eggen
and Kauchak (2012) stated that concepts
understanding can be measured through four ways
that defining concepts, identifying characteristics of
concepts, identifying or providing examples of
concept that have never been before, and connecting
concepts with other concepts. In this study, indicators
of concepts understanding were selected as
explaining concepts, identifying or providing
examples of concepts, comparing concepts with other
concepts, and inferring concepts.