<![CDATA[Does Problem-Based Learning Integrated into PHET Improve Mathematical Critical Thinking and Problem Solving Ability Objectives: This study aims to test the effectiveness of the use of PBL combined with PHET rather than PBL about problem-solving ability and mathematical critical thinking. Methods: This study uses a experimental approach involved a sample of 63 students of grade VIIIs favorite MTs in Sidoarjo Regency, East Java, divided into 2 classes (PBL class combined with PHET and regular PBL class). The data were analyzed with descriptive statistics combined with Mann-Whitneys statistical test. Findings: This study finds out that there is no difference in the influence of the intervention on the application of PBL combined with PHET with the usual PBL group in developing students mathematical problem-solving bility, and there are differences in the influence of interventions on the implementation of PHET integrated PBL and the application of ordinary PBL in developing students mathematical critical thinking ability. Conclusion: Based on findings, the importance of providing adequate computer facilities for students when they want to implement website-based learning media such as PHET.Keywords: PHET, PBL, problem solving, critical thinking, and mathematics.Abstrak: PHET dan PBL: Apakah Mereka Bekerjasama dengan Baik dalam Meningkatkan Kemampuan Berpikir Kritis Matematis dan Pemecahan Masalah? Objectives: Penelitian ini bertujuan menguji efektivitas penggunaan PBL dipadu PHET dibandingkan PBL dalam kaitan kemampuan problem solving dan berpikir kritis matematis. Metode: Penlitian dengan pendekatan eksperimen melibatkan sampel sebanyak 63 siswa kelas VIII MTs favorit di Kabupaten Sidoarjo Jawa Timur, terbagi dalam 2 kelas (Kelas PBL dipadu PHET dan kelas PBL biasa). Data dianalisis dengan statistik deskriptif yang dipadu dengan uji statistik Mann Whitney. Temuan: Temuan penelitian ini di antaranya tidak ada perbedaan pengaruh intervensi pada penerapan PBL dipadu PHET dengan kelompok PBL biasa dalam mengembangkan kemampuan pemecahan masalah matematika siswa, dan terdapat perbedaan pengaruh intervensi pada penerapan PBL diintegrasikan PHET dan penerapan PBL biasa dalam mengembangkan kemampuan berpikir kritis matematis siswa. Kesimpulan: perlunya menyediakan sarana komputer yang memadai bagi siswa ketika hendak mengimplementasikan PBL dipadu media pembelajaran berbasis website seperti PHET.Kata kunci: PHET, PBL, pemecahan masalah, berpikir kritis, dan matematika. DOI: http://dx.doi.org/10.23960/jpp.v12.i2.202215]]>
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