Main Article Content
The lack of mathematical communication skills in SMP Negeri 2 Way Tenong is cause by direct learning method that is still widely used by teachers. This study aims to find out the impact of probing-prompting learning method that is based on ethnomathematics, as well as the direct learning method on the mathematical communication skills.
The target population in this study is students of class IX of SMP Negeri 2 Way Tenong year 2016/2017. This study is an experimental study using simple random sampling that is obtained from class IX.E as the experimental group and class IX.C as the control group. Mathematical communication skill test is the instrument used in order to obtain said data. The trial test includes content validity, level of difficulty, discrimination power, and reliability. Liliefors test is used to evaluate normality, whereas similarity test of two variances is used in homogeneity evaluation.
Hypothetical evaluation that is used in this study is t-test. The result that is obtained from statistical test shows that the value of t caeculate is based on the calculation obtained from t calculate =12,489 and ttable= 1,677 thus t calculate > ttable , with a standard significance level of 0,05 or in other words, H0 is rejected and H1 is accepted. Based on this calculation, it can safely be concluded that there is an influence of ethnomathematic-based probing-prompting learning method in Class IX SMP Negeri 2 Way Tenong students on the subject of overall surface congruence.