One of the objectives of mathematics learning is to learn to communicate, because through communication students can communicate ideas, reasoning, and be able to compile mathematical evidence using complete sentences, symbols, tables, diagrams, or other media. One learning model that can be applied to improve students' mathematical communication skills is a group investigation model. This study aims to determine the improvement of students' mathematical communication skills between students who obtain group investigative learning and students who obtain conventional learning are reviewed as a whole and based on the level of students. This study uses experimental research. The design of this study was a pre-test post-test control group design. The population in this study were all seventh grade students of SMP Negeri 9 Banda Aceh. Samples are taken through random sampling techniques. To obtain research data, the instrument is used in the form of tests of students' mathematical communication skills. The results of the study showed that the mathematical communication skills of students who received group investigation learning were better than students who obtained conventional learning both overall and based on the level of students.
Soft Skill dalam matematika merupakan kemampuan yang penting dan harus ditingkatkan oleh siswa karena secara teori soft skill dapat meningkatkan Hard skill. Salah satu soft skill yang dimaksud adalah kemandirian belajar, sedangkan hard skill yang diteliti adalah kemampuan komunikasi matematis siswa. Jenis penelitian ini adalah penelitian kuantitatif dengan menggunakan uji statistik korelasi. Tujuan dari penelitian ini adalah untuk mengetahui apakah terdapat hubungan antara kemandirian belajar terhadap kemampuan komunikasi matematis siswa. Adapun yang menjadi populasi dalam penelitian ini adalah seluruh siswa di SMPN 1 Simpang Tiga, Pidie. Sampel dalam penelitian ini dipilih secara acak dari seluruh siswa kelas VII sebanyak 30 orang dengan kemampuan yang heterogen. Instrumen penelitian adalah soal tes kemampuan komunikasi matematis dan angket kemandirian belajar. Teknik analisis data dalam penelitian ini adalah uji statistik korelasi. Adapun yang menjadi hasil penelitian adalah terdapat hubungan yang positif antara kemandirian belajar dengan kemampuan komunikasi matematis siswa sebesar 0,622 dengan kriteria sedang dan koefisien determinasi sebesar 43,77%.
Teaching and learning process is inseparable from method and technique applied by educators, especially teachers as an attempt to improve the quality of output learning. Place mat technique is one of the cooperative learning methods in which students could work by themselves first and then team up with other group’s members in solving an issue or topic given. They can write down their idea as well as group’s opinion in a big place mat paper. Through the initial observation by interviewing some teachers of SMAN 1 Kuta Baro, Aceh Besar (Great aceh), it was found out that most of them never use this kind of technique in the classroom setting; they use some other kinds of techniques such as role play, jigsaw, numbered head together, and conventional technique. Therefore, the writers intend to carry on a community service to the students in the school as an effort to vary and increase the quality of teaching and learning process. This community service is hold on October 5-7, 2022 in SMAN 1 Kuta Baro, Great Aceh. This service is meant to train those teachers to be able to apply the technique during the teaching. Then, it is suggested to further community service activists to do the same activity in the rural areas as they basically need more input and insight from other educators in upgrading the way they teach.
Berpikir kritis merupakan kemampuan untuk mengerjakan sesuatu dengan benar dalam waktu yang tepat. Kurangnya perhatian pada pembentukan karakter akan menghambat proses berpikir. Habits of mind merupakan aspek pembentukan karakter siswa yang cenderung untuk berperilaku secara intelektual atau cerdas ketika menghadapi masalah, sedangkan Selfconceptmerupakan proses multi-dimensi yang mengacu pada persepsi individu. Tujuan dalam penelitian ini adalah untuk mengetahui pengaruh Habits of mine dan Selfconcept secara simultan terhadap kemampuan berpikir kritis matematis dalam pelajaran. Jenis penelitian adalah kuantitatif, Sampel adalah mahasiswa UIN Ar-raniry, instrument dalam pengumpulan data adalah Soal Tes Berpikir Krtitis Matematis (TBKM), angket yang berisikan butir skala Habits Of Mind dan Self Concept. Pengolahan data menggunakan analisis regresi linier berganda. Dari hasil analisis statistik deskriptif Habits Of Mind (X1) dan kemampuan Self Concept (X2) tersebut dapat disimpulkan secara umum bahwa sebagian besar mahasiswa Prodi Perbandingan Maszhab UIN Ar-raniry memiliki Habits Of Mind dan kemampuan Self Concept yang baik atau positif. Berdasarkan hasil perhitungan menggunakan analisis statistik inferensial terdapat pengaruh yang signifikan antara Habits Of Mind dan kemampuan Self Concept terhadap kemampuan berpikir kritis matematis mahasiswa Prodi Perbandingan Mazhab UIN Ar-Raniry tahun ajaran 2022/2023.
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