<![CDATA[This research aimed to find out the effectiveness of mathematical students’reflective thinking ability and self-concept. The population of research were students of grade VII in SMP Negeri 10 Bandarlampung in academic year of 2017/2018 that were distributed into 11 classes. The samples of research were students of VII C and VII F class which were chosen by purposive sampling technique. The design was pretest-posttest control group design. Research data were obtained through mathematical reflective thinking skills and self-concept scale. The data analysis used for this research were test and Mann-Whitney U test. Result of the research, it was refer that discovery learning was effective in terms of students' mathematical reflective thinking ability and self-concept.Penelitian ini bertujuan untuk mengetahui efektivitas model discovery learning ditinjau dari kemampuan berpikir reflektif matematis dan self-concept siswa. Populasi penelitian adalah seluruh siswa kelas VII semester genap SMP Negeri 10 Bandarlampung tahun pelajaran 2017/2018 yang terdistribusi dalam 11 kelas. Sampel penelitian adalah siswa kelas VII C dan VII F yang dipilih dengan teknik purposive sampling. Desain yang digunakan adalah pretest-posttest control group design. Data penelitian diperoleh melalui tes kemampuan berpikir reflektif matematis dan skala self-concept. Analisis data yang digunakan pada penelitian ini adalah uji dan uji Mann-Whitney U. Hasil penelitian menunjukkan bahwa model discovery learning efektif ditinjau dari kemampuan berpikir reflektif matematis dan self-concept siswa.Kata kunci: berpikir reflektif matematis, discovery learning, self-concept]]>
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