deduce something that is right in front of them (Crain,
2004). Hence, students need learning media to more
easily understand the learning materials delivered by
the teacher, especially in abstract Mathematics
subjects (Heruman, 2013; Susanto, 2014).
Furthermore, mathematics is an organized thinking
science that allows students to think deductively
(Wubbels et al., 1997).
The Department for Education and Employment
contrary claim that mathematics encompasses
numerous aspects of human life such as science and
technology, medical, economics, government, and
general policy determination (Haylock and Thangata,
2007). MoNE curriculum (2004) stated that the
standard of mathematics competency that essential
for elementary students after they learn mathematics
is to understand their surroundings, able to compete,
and success in life.
The sufficient instructional media with the
characteristics of elementary school students is
intended for effective and efficient learning process
(Falahudin, 2014). The use of instructional media to
help the process of learning activities in schools is
caused because the learning media has a variety of
functions, namely making concrete abstract concepts,
presenting objects that are too dangerous and difficult
to get into the learning environment, displays objects
that are too large / small, showing the movement
which is too fast / slow when using regular eyes
(Susilana and Riyana, 2009). The selection of good
learning media should consider the characteristics of
the selected media. There are 7 characteristics of good
learning media are: (1) clear and neat; (2) clean and
attractive; (3) in accordance with the objectives; (4)
relevant to the topic being taught; (5) according to the
learning objectives; (6) practical, flexible and
durable; and (7) good quality (Asyhar, 2012).
In addition to the characteristics possessed by the
learning media, the use of learning media depends on
the type of learning media to be selected. Broadly
speaking, the types of learning media is divided into
3 parts, namely (1) audio media; (2) visual media; (3)
audio visual media (Sadiman et al., 2012). Selection
of the type of learning media should be tailored to the
place, time and learning objectives.
One type of visual learning media that is often
used in school is the book. Based on the previous
explanation, the book has many advantages
(practical, flexible and durable). Thus, book is chosen
as a learning medium in schools. A good book is a
book that can attract students to learn by providing
stories and images that appropriate to student
characteristics (Kelemen et al., 2014). In addition,
books used in learning activities need to consider
aspects of hospitality to children in terms of materials,
stories, learning activities and physical form of the
book. Thus, children's rights in school can be
facilitated based on the Constitution of the Republic
of Indonesia 1945 article 28C and the Regulation of
the Minister of Women Empowerment and Child
Protection of the Republic of Indonesia Number
8/2004 on Child Friendly School Policy, which
includes non-discrimination, non-violence,
prohibition to hurt the feelings of fellow students, and
the integration of the environment in the learning
process. However, there are still many textbooks used
in several schools in the Patuk sub-district tend to
ignore the aspect of hospitality towards children in
both materials and learning. Moreover, there are
several books that do not fit the characteristics of
elementary students such as containing divorce
issues.
The lack of using the stories and pictures in math
books currently used in elementary schools causes
students to often experience difficulties in
understanding the mathematics material contained in
them, even though the use of pictorial stories is very
necessary to clarify the material to be conveyed. This
is in accordance with the findings of several studies
that show that the subject matter presented in the form
of stories will be easier to be understood by students
(Colwel, 2013; Mourao, 2016). This is what underlies
the idea of developing lift the Flap storybook based
on this child friendly storybook. With the
combination of pictorial stories contained in this
book, it is expected that the mathematics material that
has been felt difficult to understand by elementary
school students has become easier. Lift the flap
storybook was chosen because it has several
advantages such as the presence of illustrated stories
that can be opened and closed again (Lukkens, 1999;
Huck et al., 1987).
In addition to the lack of using more illustrated
stories, the questions contained in the mathematics
book that have been used so far are also not based on
problems, so students are not accustomed to solving
problem-based questions using appropriate problem-
solving steps. This causes the low problem-solving
ability of elementary school students in mathematics
which is one of the cognitive aspects that is very
important to be improved. The low cognitive abilities
of students can be seen from the results of the 2015
Program for International Students Assessment
(PISA) which shows that Indonesian students are
ranked 69 out of 72 countries participating in the test.
In addition, from the results of the Trends of the
International Mathematics and Science Study
(TIMSS) in 2015, the achievement of Indonesian
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