ABSTRAK
Penelitian ini bertujuan untuk mengetahui efektivitas metode pembelajaran Course Review Horay (CRH) dalam meningkatkan prestasi belajar Matematika materi bangun datar anak tunagrahita ringan.
Pendekatan penelitian menggunakan penelitian kualitatif dengan jenis penelitian eksperimen. Pendekatan eksperimen yang digunakan adalah pendekatan Single Subject Research. Desain yang digunakan adalah rancangan A1-B1-A2-B2. Subjek penelitian merupakan empat siswa tunagrahita ringan kelas III di SLB C Setya Darma Surakarta. Teknik pengumpulan data menggunakan tes pilihan ganda. Data yang diperoleh ditampilkan dalam bentuk grafik dan dianalisis dengan statistik deskriptif.
Hasil penelitian menunjukkan adanya peningkatan prestasi belajar matematika materi bangun datar yang ditunjukkan melalui nilai rata-rata pada baseline pertama 45, intervensi pertama 70, baseline kedua 60 dan intervensi kedua 82,5. Berdasarkan hasil penelitian tersebut, dapat disimpulkan bahwa metode pembelajaran Course Review Horay (CRH) efektif dalam meningkatkan prestasi belajar matematika materi bangun datar anak tunagrahita.
Kata Kunci: Course Review Horay (CRH), prestasi belajar, matematika, anak tunagrahita ringan.
ABSTRACT
The goal of this research is to determine the effectiveness of Course Review Horay (CRH) to improving mathematics learning achievement of two dimentional figure on students with mild mental retardation.
The approach of this research is using qualitative research with experimental research type. Experimental approach used in this research is Single Subject Research (SSR) approach. The design in this study used A1-B1-A2-B2 design. The research subject is four mild mental retardation students in third grade at  SLB C Setya Darma surakarta. Data is collected by using multiple choice test. Then, it is displayed in graphical form and analyzed by using descriptive analysis.
The result shown an increased in mathematics learning achievement of two dimentional figure by the average scores on the first baseline is 45, first intervention is 70, second baseline is 60 and second intervention is 82,5. Based on these research, it can be concluded that Course Review Horay (CRH) was effective to improve mathematics learning achievement of two dimentional figure on students with mild mental retardation.
Keywords : learning metod, Course Review Horay (CRH), learning achievement, mathematics, student with mental retardation