THE EFFECT OF PROBLEM-BASED LEARNING MODEL ASSISTED BY GEOGEBRA SOFTWARE ON STUDENTS’ MATHEMATICAL COMMUNICATION ABILITYIN SMP N 1 SELESAI

The level of students’ mathematical communication ability is still poor. The model of learning as element that affect it. This research aimed, firstly to analyze how the difference of students' mathematical communication ability taught by PBL assisted by Geogebra and Conventional learning model. Secondly, to analyze how the PBL assisted by Geogebra can affect students' mathematical communication ability. This research was Quasi Experiment with Nonequivalent Control Group design. Sample of this research was 31 students of class VIII-7 as experiment class and VIII-8 with 30 students
as control class, which were selected through random sampling technique at SMP N 1 Selesai. The experiment class was taught by PBL aided by Geogebra while Conventional learning in the control class. Data collection instrument used mathematics communication ability test. Hypothesis testing with t-test showed that ���������� > ������ ( 3,846 > 1,671 ) with � = 0,05 and �� = 59. Thus �� is rejected and �� is accepted. Therefore, students' mathematical communication ability taught by PBL assisted by Geogebra was higher than students taught by Conventional learning. The difference implies ability of students' mathematics communication are affected by the learning models used. Through the implementation of PBL syntaxes and Geogebra, ability of students' mathematical communication increased.