Pengaruh Penerapan Metode Kooperatif Tipe Investigasi Kelompok Terhadap Kemampuan Komunikasi Matematis dan Self Confidence Siswa SMP

Abstract
This study aims to see the influence of cooperative methods of group investigation type (hereinafter abbreviated as MKTIK) to the ability of mathematical communication and self confidence of students. This research was conducted at SMP Negeri 123 Jakarta in the academic year 2016/2017. The research method used quasi experiment (quasi experiment). The reasonably affordable population of this study is four classes in SMP Negeri 123 Jakarta (two classes studying through cooperative type-type investigative methods and two classes that received conventional learning). After testing, the data used are normally distributed, have the same or homogeneous variance, and have an average similarity. The result of this research are 1) there are difference of mathematical communication ability of students who learn through MKTIK compared with students who get conventional learning, 2) there is interaction influence between learning method and mathematical early ability to students mathematical communication ability, 3) there is difference of students' mathematical communication ability With a high mathematical early ability to learn through MKTIK compared with students who received conventional learning, 4) there was no difference in mathematical communication ability of students with low early mathematical skills learning through MKTIK compared with students who received conventional learning, and 5) there was a difference of self confidence Students who learn through MKTIK compared with students who received conventional learning.