expected to improve students' high-order thinking
skills.
High-level thinking according to the taxonomy of
bloom is the ability that includes analysis, evaluation,
and creation (Anderson & Krathwohl, 2001).
According to Heong et al. (2011) Higher-order
thinking is defined as the wider use of the mind to find
new challenges. This high-level thinking capability
requires a person to apply new information or prior
knowledge and manipulate information to reach
possible answers in new situations. High-level
thinking is thinking at a higher level than simply
memorizing facts or saying something to someone
just as something is delivered to us. Wardana (2010)
argues that high-order thinking is a process of
thinking involving mental activity in an effort to
explore complex, conscious and creative, conscious
experiences to achieve the goal of acquiring
knowledge that includes the level of analytical,
synthesis, and evaluative thinking. One of the most
widely used mathematical materials in everyday life
and including the content domain of TIMSS and
PISA is the volume of cubes and beams which is one
of the geometry material. In addition, the learning
objectives of cubes and cuboids volumes that exist in
the curriculum are limited to the students can
calculate the surface area and volume of cubes,
beams, prisms, and pyramids, but do not relate to
daily life in problem solving (Curriculum, 2006). So
it can be assumed that the problem of cube and cuboid
volume in the textbook has not included the demands
of problem based learning that include the ability to
find conjecture, analysis, generalization, connection,
synthesis, non-routine problem solving, and
justification or verification.
Based on some of these opinions can be concluded
that high order thinking (High Order Thinking Skill -
HOTS) is a process of thinking that is not just
memorize and relay information that is known. High-
level thinking is the ability of students to solve new
non-routine problems in exploring complex,
reflective and creative experiences by using different
approaches to existing tasks by linking, manipulating,
and transforming existing knowledge and experience
to think critically and creatively in the effort to make
decisions and solve problems in new situations to
gain knowledge that includes the level of analytical,
evaluation, and creative thinking.
Some relevant researches include Lewy (2009),
which develops Problems to Measure Thinking
Ability to provide results of the problems which are
developed to be used to measure higher order
thinking skills in Number Sequence and Series.
Darwanto (2017) entitled Development of
mathematics teaching materials with PBL model to
develop the ability of creative thinking on high school
students with the results of research that students 10
th
grade MAN showed the average results of learning
test students showed good results that is beyond
KKM, and also data analysis in the form of a response
indicates that learners respond well, so that the
development by using teaching materials that have
been developed creative thinking of learners. In
addition Pertiwi (2016) The development of
mathematical problems characteristic of TIMSS type
problem solving on the topic of geometry measuring
cube volumes and
8
th
grade blocks shows that students
can understand the problem well, according to
TIMSS level with reliable questions of 0.7003. On the
basis of this, in an effort to improve the learning
process, researchers want to develop a matter of high
order thinking type of application of cube volume and
block based Problem Based Learning on the subject
of cubes and cuboids. This research combines from
some previous research, If Pertiwi (2016) develops
math problem that focuses on the characteristic of
TIMSS hence the researcher develops about high
order thinking type application to know the student's
mathematical literacy in the problem that is cut down
characterized by high level thinking. This study is
limited to the volume material of cubes and cuboids,
the researchers hope there will be other studies that
can develop this research.
2 RESEARCH METHOD
The type of this research is design research type
development study (Plomp & Nieveen, 2009). In this
study, researchers developed a matter of high order
thinking type of cubes and cuboids validation of valid
and practical volumes, and used to find out the
mathematical literacy in the development of this
problem using the stages of the popularized ADDIE
(Analysis-Design-Develop-Implement-Evaluate)
model in the 1990s by Reiser and Mollenda (Branch,
2009).
Stage analysis is a need assessment process (needs
analysis). In this stage, the researcher analyzes the
need for textbooks used by students and teachers in
learning, how teachers teach, and other learning
resources that teachers use in relation to study of
research materials. The technique is an interview with
a teacher of mathematics with the aim to know the
description of the characteristics of students and
know the approach taken by the teacher during the
learning process.