Abstract
The research was conducted to find out the influence of Group Investigation (GI) of Cooperative Learning methods toward the student’s ability of mathematical reasoning. The research design was quasi-experimental the nonequivalent posttest-only control group design consisting of one experimental class (Group Investigation of Cooperative Learning) and one control class. The research population was all the second-semester students of VIII grade of MTs Negeri 1 Lampung Timur in the academic year of 2015/2016. The research instruments used were mathematical reasoning ability test. Data Analyze mathematical reasoning ability was used independent sample t-test. The results showed that: (1) mathematical reasoning ability using Group Investigation of Cooperative Learning was higher than conventional learning.Keywords: Mathematical Reasoning Ability, Group Investigation (GI) of Cooperative Learning
Highlights
Mata pelajaran matematika diberikan kepada semua peserta didik mulai dari sekolah dasar untuk membekali peserta didik dengan kemampuan berpikir logis, analitis, sistematis, kritis, dan kreatif, serta kemampuan bekerjasama
The research was conducted to find out the influence of Group Investigation (GI) of Cooperative Learning methods toward the student’s ability of mathematical reasoning
The research design was quasi-experimental the nonequivalent posttest-only control group design consisting of one experimental class (Group Investigation of Cooperative Learning) and one control class
Summary
Dimulai dengan pembagian kelompok, selanjutnya guru bersama perserta didik melihat topik-topik tertentu dengan permasalahan-permasalahan yang dapat dikembangkan dari topiktopik itu. Sesudah topik beserta permasalahannya disepakati, peserta didik beserta guru menentukan metode penelitian yang dikembangkan untuk memecahkan masalah. Setiap kelompok bekerja berdasarkan metode investigasi yang telah mereka rumuskan. Aktivitas tersebut merupakan kegiatan sistemik keilmuan mulai dari mengumpulkan data, analisis data, sintesis, hingga menarik kesimpulan. Langkah berikutnya adalah presentasi hasil oleh masing-masing kelompok dan di akhir pembelajaran dilakukan evaluasi. Evaluasi dapat memasukkan assesmen individual atau kelompok
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