<![CDATA[Penelitian dilakukan demi menguji keefektifan project based learning (PjBL) berbantuan etnomatematika android untuk kemampuan berpikir kritis siswa. Penelitian ini menggunakan desain pretest-posttest. Sampel yang dipakai berjumah 50 siswa yang terdiri dari 24 siswa untuk kelompok eksperimen dan 26 siswa untuk kelompok kontrol. Instrumen yang dipakai berupa soal posttest dan pretest berbentuk uraian. Analisis yang digunakan yaitu, uji ketuntasan rata-rata, uji proporsi, uji independent, uji paired, serta uji N-gain. Hasil penelitian yang didapatkan yaitu telah memenuhi beberapa uji diantaranya: (1) Kriteria ketuntasan rata-rata, (2) Memenuhi ketuntasan proporsi, (3) Posttest kelompok eksperimen memiliki hasil kemampuan lebih baik dari kelas kontrol, dan (4) Kemampuan berpikir kritis kelompok eksperimen meningkat serta hasil posttest kelas eksperimen memenuhi kriteria sedang pada uji N-gain.AbstractThe research was conducted to test the effectiveness of project-based learning (PjBL) assisted by Android ethnomathematics for students' critical thinking abilities. This research uses a pretest-posttest design. The sample used consisted of 50 students, consisting of 24 students for the experimental group and 26 students for the control group. The instruments used are posttest and pretest questions in the form of descriptions. The analysis used is the average completeness test, proportion test, independent test, paired test, and N-gain test. The research results obtained showed that they had fulfilled several tests, including: (1) the average completeness criteria; (2) fulfilling the proportion of completeness; (3) posttesting, the experimental group had better ability results than the control class; and (4) the group's critical thinking ability during the experiment increased, and the posttest results of the experimental class met the moderate criteria in the N-gain test.]]>
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