AbstrakTujuan penelitian ini untuk meningkatkan keterampilan berpikir kritis dan hasil belajar siswa melalui model Discovery Learning pada pembelajaran matematika di kelas IV semester II. Penelitian ini berupa penelitian tindakan kelas dengan empat tahapan yaitu, perencanaan, pelaksanaan, observasi dan refleksi yang dilakukan dalam dua siklus pembelajaran. Setiap siklus terdiri dari tiga pertemuan. Perolehan data melalui teknik tes dan non tes. Subjek penelitian ini adalah siswa kelas IV SD Negeri Tegalrejo 02 Salatiga sebanyak 26 siswa. Berdasarkan hasil penelitian dapat disimpulkan bahwa: (1) terdapat peningkatan keterampilan berpikir kritis siswa dari pra siklus 38% meningkat pada siklus I menjadi 73% kemudian meningkat menjadi 81% pada siklus II. Peningkatan keterampilan berpikir kritis berdampak pada hasil belajar siswa yaitu pada pra siklus 35% meningkat pada siklus I menjadi 77% kemudian meningkat menjadi 85% pada siklus II; (2) penerapan langkah-langkah model pembelajaran Discovery Learning dapat meningkatkan keterampilan berpikir kritis dan hasil belajar siswa melalui pemberian stimulasi, merumuskan masalah, pengumpulan data, pemrosesan data, pembuktian data, dan menarik kesimpulan. Kata Kunci: discovery learning, berpikir kritis, hasil belajar. AbstractThe purpose of this study is to improve critical thinking skills and student learning outcomes through the Discovery Learning model in mathematics learning in class IV semester II. This research is a classroom action research with four stages, namely, planning, implementation, observation and reflection carried out in two learning cycles. Each cycle consists of three meetings. Data acquisition through test and non-test techniques. The subjects of this study were the fourth grade students of SD Negeri Tegalrejo 02 Salatiga as many as 26 students. Based on the results of the study it can be concluded that: (1) there is an increase in students' critical thinking skills from the pre-cycle 38% increasing in the first cycle to 73% then increasing to 81% in the second cycle. Increased critical thinking skills have an impact on student learning outcomes, namely in the pre-cycle 35% increased in the first cycle to 77% then increased to 85% in the second cycle; (2) the implementation of the steps of the Discovery Learning learning model can improve critical thinking skills and student learning outcomes through stimulation, problem formulation, data collection, data processing, data verification, and drawing conclusions.
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