From the table above can be seen that the value of
concept understanding in the class that uses Roberval
balance as a learning medium has a relatively higher
increase compared with the control class. In the
control class, the students' concept comprehension
value improvement between pre test and post test is
shown by sig. 0.006 <sig. 0.05. The value of concept
understanding in the classroom that utilizes the
learning media seems to experience a relatively better
increase. In the experimental class the pretest and
posttest values go up with the sig value 0.355>
sig.0.05. The results of Zacharia (2003), Carey et.al
(2007), and Kautz et.al (2005). Students'
responsibility in working on the worksheet reaches
94%. This can show students' enthusiasm in learning
when learning is based on practicum tools (Machemer
2007). The worksheet will condition the students to
focus more on the lesson because there is always a
bill that they must meet at each stage. This is very
motivating students to follow the whole learning
process. So it can strengthen the process of
conclusion that the use of learning media well in
assisting students in improving their understanding of
the concept of teaching materials provided by
teachers.
4 CONCLUSIONS
Learning by using practical media is quite effective in
improving students' motivation in learning. At first
they were encouraged to know what kind of media
was used in the lesson. This becomes an important
point at the beginning of learning. As for the process
of students guided by bill in the form of worksheets
that they must finish in accordance with the use of
learning media used.
The teacher's role in this case really becomes the
facilitator and motivator only. And the crucial direct
role that media-based learning can provide to enhance
conceptual understanding is the delivery of the
material itself. Media can be a tool to enable students
to concretize concepts that are relatively abstract to
them. Or help them in doing simulai thinking.
Learning using robelval balance media has been
proven to improve students' concept comprehension
better than in conventional learning class. This can be
the reason why the development of appropriate
learning media in accordance with teaching materials,
learning conditions and conditions should be
improved.
ACKNOWLEDGEMENTS
We thank to the students of Miftahul Falah Islamic
Junior High School. This research funded by Sunan
Gunung Djati State Islamic University and Miftahul
Falah Islamic Junior High School.
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