Abstract
This study aims to improve mathematics learning outcomes regarding the concepts of translation (shift) and reflection (reflection) of the transformation matrix. This research is a research study that applies the group investigation method. The background for this research was due to a lack of conceptual understanding of transformation material, so that the acquisition of student learning outcomes for translation and reflection material was very low. This research was conducted in 2 cycles. The results analysis technique was carried out qualitatively in the form of test results. The objectives to be achieved in this research include: (1) Knowing the implementation of the group investigation method in improving mathematics learning outcomes for students, (2) Knowing the increase in student learning outcomes with the group investigation method for students. The instrument used was class XI IPS students with 36 students as research subjects. Prior to the administration of the group investigation method the number of students who completed only reached 12 people with an average of 57.14, whereas after using the group investigation method the number of students who completed as many as 33 people with an average of 74.72. This means that the group investigation method is effectively used to improve student learning achievement in the material of the concept of translation (shift) and reflection (reflection) of the transformation matrix.
ABSTRAKPenelitian ini bertujuan dalam meningkatkan hasil belajar matematika mengenai konsep translasi (pergeseran) dan refleksi (pencerminan) terhadap matriks transformsinya. Penelitian ini adalah penelitian penelitian yang menerapkan metode group investigation. Latar belakang dilakukannya penelitian ini karena kurangnya pemahaman konsep tentang materi transformasi, sehingga perolehan hasil belajar siswa untuk materi translasi dan refleksi sangat rendah. Penelitian ini dilakukan sebanyak 2 siklus. Tekhnik analisis hasil dilakukan secara kualitatif berupa hasil tes. Tujuan yang akan dicapai pada peneltian ini antara lain: (1) Mengetahui pelaksanaan metode group investigation dalam meningkatkan hasil belajar matematika pada peserta didik, (2) Mengetahui peningkatan hasil belajar siswa dengan metode group investigation pada pesert didik. Instrumen yang digunakan adalah peserta didik kelas XI IPS dengan subjek penelitian 36 peserta didik. Sebelum diberikannya metode group investigation jumlah peserta didik yang tuntas hanya mencapai 12 orang dengan rata-rata 57,14, sedangkan setelah menggunakan metode group investigation jumlah peserta didik yang tuntas sebanyak 33 orang dengan rata-rata 74,72. Artinya metode group investigation efektif di gunakan untuk meningkatkan prestasi belajar peserta didik pada materi Konsep translasi (pergeseran) dan refleksi (pencerminan) terhadap matriks transformasinya.
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