will dominate in the group, thus preventing other
students from contributing their creative ideas. This
fact indicates that a learning model is needed, because
it can help students more actively study in the
classroom, so that each student can convey his idea
freely. There are a variety of learning models that can
be applied to overcome this problem. The learning
model chosen by the writer was guided inquiry model
based on lesson study with scaffolding method.
Guided inquiry model is a learning model that
helps students to find answers of questions or
problems they encounter through investigation. This
model is very suitable to help students to be active in
learning because each student in each group is asked
to look for a problem and then seek answers from
these problems. Implementation of this model is
expected to improve students' creative thinking skills
in seeking answers and solutions from problems in
the field of learning they encounter in the classroom.
Learning models that require students to conduct an
inquiry can guide students to increase the curiosity
that can be seen from the investigation of the
problems undertaken during the learning processes,
the smoothness in finding solutions, flexible thinking
that will help students look for many different
alternative solutions, and authenticity of ideas.
Implementation of inquiry learning model was
conducted through lesson study, it aims to facilitate
master students and undergraduate students who are
guided in investigating the problems that occur in the
learning process. Lewis (Ibrohim and Syamsuri,
2008) explained that the Lesson Study was chosen to
be an alternative that positively impacted the
prospective teachers and students who were taught.
Furthermore, it is explained that the Lesson Study is
an alternative way that can improve the quality of
learning and student activities, because a) the
development of Lesson Study is done and based on
the result of "sharing" of professional knowledge
based on the practice and the teaching result which is
done to the teacher; b) a fundamental emphasis on
Lesson Study, ie the quality of student learning; c) the
purpose of the lesson to be the focus and the main
point of attention in classroom learning; and e)
Lesson Study will place the main role of teacher as a
researcher.
The Implementation of guided inquiry-based
lesson study is conducted through scaffolding
method. The scaffolding method is carried out by
giving direction, guidance, encouragement, giving
examples, to outlining the learning steps so that
students can grow independently. Master students
direct the undergraduate students to find problems in
the learning process in the 21
st
Century Biology
Learning class, then ask students to find solutions to
the problems.
2 METHOD
The type of this research is classroom action research
with qualitative descriptive approach. This study is
conducted in two cycles, where in each cycle there are
four stages: planning, action, observation and
reflection. In each open class two Lesson Study
processes are performed. The first lesson study was
conducted by lecturer with three master students. The
results of the first lesson study then implemented to
guide the undergraduate students in implementing the
second Lesson Study. The first and second Lesson
Study consist of stage plan, do, and see. Summary of
the research activities are shown in Table 1. The
subjects of this study are 31 students of biology
education courses, who took biology learning of 21
st
century course.
The Lesson Study implementation data comes
from the clinical supervisor and the Lesson Study
member of undergraduate students. These data were
obtained from the monitoring sheet of the plan, do,
and see activities filled by the clinical supervisor. The
data of learning implementation came from the
clinical supervisor. Creative thinking skills data were
obtained from the results of the Mind Map assessment
made by the students at each meeting. Qualitative
data of creative thinking skills were observed from
the activities of Plan, Do, and See which were carried
out by groups who taught their friends. The research
procedure in this Classroom Action Researh (CAR) is
more unique than usual. Researchers here not only
guide students in the classroom, but also provide
guidance for students who will teach their friends.
The first step of CAR is plan, same like Lesson
Study (LS). Master students observe the learning
activity to find a problem. After that master students
and lecturer work collaboratively to find a solution.
At this step master students decide who will teach and
who will observe the learning activity (Amri, 2013).
The second step is action, in LS it called Do.
Master students as the lecturer do the action. Master
students ask the learning biology of 21
st
century
students to make four groups (the first step of guided
inquiry). Each group of bachelor students should
observe the 21
st
century skills weakness of their
friends. After they found their friends weakness, they
should solve it by doing lesson study (the second step
of guided inquiry). After that master students guide
bachelor students to make a plan for solving the
problem (the third step of guided inquiry). Bachelor