PENGARUH MODEL PEMBELAJARAN PROBLEM POSING DENGAN PENDEKATAN OPEN-ENDED TERHADAP KEMAMPUAN BERPIKIR KRITIS MATEMATIS SISWA SMP NEGERI 242 JAKARTA

ANA RIADLATUSH SHOLIHAH, . (2026) PENGARUH MODEL PEMBELAJARAN PROBLEM POSING DENGAN PENDEKATAN OPEN-ENDED TERHADAP KEMAMPUAN BERPIKIR KRITIS MATEMATIS SISWA SMP NEGERI 242 JAKARTA. Sarjana thesis, UNIVERSITAS NEGERI JAKARTA.

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Abstract

Tujuan dari penelitian ini adalah mengetahui pengaruh model pembelajaran problem posing dengan pendekatan open-ended terhadap kemampuan berpikir kritis matematis siswa. Metode penelitian yang digunakan adalah metode quasi-experiment dengan desain penelitian post-test only control group design. Populasi terjangkau penelitian ini adalah seluruh siswa kelas VIII SMP Negeri 242 Jakarta tahun ajaran 2025/2026. Teknik pengambilan sampel yang digunakan adalah teknik cluster random sampling. Instrumen penelitian berupa tes kemampuan berpikir kritis matematis yang terdiri dari lima soal uraian dengan materi statistika yang telah dinyatakan valid dan reliabel. Hasil pengujian hipotesis menggunakan uji-t pada taraf signifikansi 5% menunjukkan bahwa nilai t_hitung > t_tabel atau sebesar 2,084 > 1,669 sehingga tolak H0 yang artinya rata-rata kemampuan berpikir kritis matematis siswa pada kelas eksperimen lebih tinggi dibandingkan rata-rata kemampuan berpikir kritis matematis siswa pada kelas kontrol. Nilai Cohen’s effect size yang diperoleh adalah 0,513 yang mana termasuk ke dalam kategori sedang. Berdasarkan hasil yang telah diperoleh tersebut, maka disimpulkan bahwa terdapat pengaruh dari penerapan model pembelajaran problem posing dengan pendekatan open-ended terhadap kemampuan berpikir kritis matematis siswa SMP Negeri 242 Jakarta.*****The purpose of this study was to determine the effect of the problem posing learning model with an open-ended approach on students’ mathematical critical thinking skills. The research method used was a quasi-experimental method with a post-test only control group design. The accessible population for this study consisted of all eighth-grade students at SMP Negeri 242 Jakarta for the 2025/2026 academic year. The sampling technique used was cluster random sampling. The research instrument consisted of a mathematical critical thinking test comprising five essay-type questions on statistics that had been validated and found to be reliable. The results of hypothesis testing using the t-test at a significance level of 5% showed that the calculated t_hitung > t_tabel, specifically 2,084 > 1,669; therefore, H₀ was rejected, meaning that the average mathematical critical thinking ability of students in the experimental class was higher than the average mathematical critical thinking ability of students in the control class. The Cohen’s effect size obtained was 0,513, which falls into the medium category. Based on the results, it is concluded that the implementation of the problem posing learning model with an open-ended approach has an effect on the mathematical critical thinking skills of students at SMP Negeri 242 Jakarta.

Item Type: Thesis (Sarjana)
Additional Information: 1). Dr. Ellis Salsabila, M.Si. ; 2). Dr. Anny Sovia, S.Si., M.Pd.
Subjects: Sains > Matematika
Divisions: FMIPA > S1 Pendidikan Matematika
Depositing User: Users 36530 not found.
Date Deposited: 20 Aug 2026 07:04
Last Modified: 20 Aug 2026 07:04
URI: http://repository.unj.ac.id/id/eprint/71820

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