Abstract:
Geoboard learning media is a visual and manipulative tool that is
effectively used in mathematics learning, especially on the materialof the perimeter of flat
shapes at the elementary school level. This study aims to determine the effect of using
geoboard media on students' ability to calculate the perimeter of flat shapes at the
Kampung Bharu Malaysia Guidance Center. The study used a quantitative
approach with a pre-test and post-test experimental design. The research sample
consisted of 9 fourth-grade students. Data were collected through tests on the ability to
calculate the perimeter of flat shapes, observations, interviews, and documentation.
The results of the study showed a significant increase in students' abilities after the
application of geoboard media, indicated by a significant difference in pre-test and post
test scores based on a paired t-test (Sig. 0.000 < 0.05). Geoboard media helps students
understand the concept of side length, the shape of flat shapes, and the procedure for
calculating the perimeter in a concrete and visual way, so that learning becomes more
interactive and meaningful. Thus, it can be concluded that the use of geoboard media
has a positive and significant effect on improving the ability to calculate the perimeter of
flat shapes.
