Diah Ayuningrum, Diah
Universitas Negeri Surabaya

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Strategi Pemecahan Masalah Matematika Siswa SMP Ditinjau Dari Tingkat Berpikir Geometri Van Hiele Ayuningrum, Diah
Kreano, Jurnal Matematika Kreatif-Inovatif Vol 8, No 1 (2017): Kreano, Jurnal Matematika Kreatif-Inovatif
Publisher : Jurusan Matematika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Sema

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/kreano.v8i1.6851

Abstract

Penelitian ini bertujuan untuk mendeskripsikan strategi pemecahan masalah matematika siswa SMP ditinjau dari tingkat berpikir geometri Van Hiele yaitu visualisasi, analisis dan deduksi informal. Penelitian ini merupakan penelitian kualitatif yang menghasilkan data deskriptif. Subjek penelitian ini terdiri dari tiga siswa kelas VIII-F SMPN 1 Waru, Sidoarjo. Penelitian ini dimulai dengan menentukan subjek penelitian dengan menggunakan tes tingkat berpikir geometri Van Hiele, kemudian dilanjutkan dengan pemberian tugas pemecahan masalah dan wawancara. Pengecekan keabsahan data menggunakan triangulasi waktu. Strategi pemecahan masalah siswa akan dianalisis berdasarkan tahapan pemecahan masalah Krulik dan Rudnick, yang terdiri dari (1) membaca dan berpikir, (2) mengeksplorasi dan merencanakan, (3) memilih suatu strategi, (4) menemukan jawaban, dan (5) meninjau dan mendiskusikan. Hasil penelitian menunjukkan bahwa 1) siswa visualisasi dalam memecahkan masalah matematika menggunakan strategi membuat gambar, berpikir logis, menulis persamaan atau kalimat terbuka, dan membuat daftar yang teratur, subjek visualisasi belum memahami bahwa persegi merupakan persegipanjang. 2) Siswa analisis memecahkan masalah matematika menggunakan strategi berpikir logis, menguji dan menerka serta membuat gambar, subjek analisis belum memahami bahwa persegi merupakan persegi panjang. 3) Siswa deduksi informal dalam memecahkan masalah matematika menggunakan strategi membuat gambar, berpikir logis, menulis persamaan atau kalimat terbuka serta menerka dan menguji, subjek deduksi informal telah memahami bahwa persegi merupakan persegipanjang.This study aimed to describe the mathematical problem-solving strategy of junior high school students based on Van Hiele levels of geometry thinking, namely visualization, analysis and informal deduction. This study was a qualitative research that produced descriptive data. Subjects of this study consisted of three students of class VIII-F SMPN 1 Waru, Sidoarjo. The study began by determining the subject of research by using Van Hiele’s geometry test, and then given problem solving task and interviews. For checking the validity of the data used a triangulation of time. Student problem solving strategies will be analyzed based on the stages of Krulik and Rudnick’s problem solving, which consists of (1) to read and think, (2) explore and plan, (3) selecting a strategy, (4) find the answers, and (5) review and discuss. The results showed that 1) the strategy of visualization student in solving mathematical problems was drew a picture, logical reasoning, wrote an equation or an open sentence, and made organized list, the visualization subject did not understood that a square was a rectangle. 2) The analysis student in solving mathematical problems was used logical reasoning strategies, guessed and checked, and drew a picture, the analysis subject did not understood that a square was a rectangle. 3) The strategy of informal deduction student in solving mathematical problem was drew a picture, logical reasoning, wrote an equation or an open sentence and guessed and checked, the subject of informal deductions had understood that a square was a rectangle. 
PENGARUH MODEL PROBLEM BASED LEARNING TERHADAP KETERAMPILAN BERPIKIR KRITIS SISWA SMA PADA MATERI PROTISTA Ayuningrum, Diah; Susilowati, Sri Mulyani Endang
Journal of Biology Education Vol 4 No 2 (2015)
Publisher : Journal of Biology Education

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Abstract

Abstrak ___________________________________________________________________ Penelitian ini bertujuan untuk mengetahui pengaruh model problem based learning (PBL) terhadap keterampilan berpikir kritis siswa kelas X SMA N 1 Rembang. Penelitian quasi experimental ini menggunakan desain pretes postes nonequivalent control group. Sampel yang digunakan adalah X MIA 5 sebagai kelas eksperimen dan X MIA 6 sebagai kelas kontrol. Hasil uji-t post-test diperoleh thitung sebesar 10,12 t tabel = 1,67, sehingga Ho ditolak, dapat disimpulkan bahwa keterampilan berpikir kritis kelas eksperimen lebih baik daripada kelas kontrol. Hasil uji-t N-Gain yang menggunakan taraf ketidakpastian 5% dan dk= 59 diperoleh harga t tabel = 1,67 sedangkan harga t hitung = 3,55. Harga t hitung > t tabel , sehingga Ho ditolak, dapat disimpulkan bahwa peningkatan rata-rata keterampilan berpikir kritis kelas eksperimen lebih besar daripada kelas kontrol. Penerapan model PBL berpengaruh positif terhadap keterampilan berpikir kritis Siswa SMA pada materi protista.   Abstract ___________________________________________________________________ This research aimed to determine the effect of problem based learning on student’s critical thinking skills from class X SMA N 1 Rembang. The research method was Quasi experimental with Pretest-Posttest Non-Equivalent Control Group Design. The samples were taken by technique cluster random sampling and obtained X MIA 5 as class experiment and X MIA 6 as class control. The analysis of post-test and n-gain t-test results the critical thinking skills of class experiment were better than class control. The result of pot-test t-test obtained t-calculated = 10.12 and t-table = 1.67, concluded that critical thinking skills of class experiment is greater than class control. The result of n-gain t-test obtained t-table = 1.67, whereas t-calculated = 3.55. The value of t-calculated > t-table, and can be concluded as the enhancement of critical thinking skills of class experiment was greater than class control. The implementation of PBL gave positive effect on senior high school student’s critical thinking skills.
Strategi Pemecahan Masalah Matematika Siswa SMP Ditinjau Dari Tingkat Berpikir Geometri Van Hiele Ayuningrum, Diah
Kreano, Jurnal Matematika Kreatif-Inovatif Vol 8, No 1 (2017): Kreano, Jurnal Matematika Kreatif-Inovatif
Publisher : Jurusan Matematika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Sema

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/kreano.v8i1.6851

Abstract

Penelitian ini bertujuan untuk mendeskripsikan strategi pemecahan masalah matematika siswa SMP ditinjau dari tingkat berpikir geometri Van Hiele yaitu visualisasi, analisis dan deduksi informal. Penelitian ini merupakan penelitian kualitatif yang menghasilkan data deskriptif. Subjek penelitian ini terdiri dari tiga siswa kelas VIII-F SMPN 1 Waru, Sidoarjo. Penelitian ini dimulai dengan menentukan subjek penelitian dengan menggunakan tes tingkat berpikir geometri Van Hiele, kemudian dilanjutkan dengan pemberian tugas pemecahan masalah dan wawancara. Pengecekan keabsahan data menggunakan triangulasi waktu. Strategi pemecahan masalah siswa akan dianalisis berdasarkan tahapan pemecahan masalah Krulik dan Rudnick, yang terdiri dari (1) membaca dan berpikir, (2) mengeksplorasi dan merencanakan, (3) memilih suatu strategi, (4) menemukan jawaban, dan (5) meninjau dan mendiskusikan. Hasil penelitian menunjukkan bahwa 1) siswa visualisasi dalam memecahkan masalah matematika menggunakan strategi membuat gambar, berpikir logis, menulis persamaan atau kalimat terbuka, dan membuat daftar yang teratur, subjek visualisasi belum memahami bahwa persegi merupakan persegipanjang. 2) Siswa analisis memecahkan masalah matematika menggunakan strategi berpikir logis, menguji dan menerka serta membuat gambar, subjek analisis belum memahami bahwa persegi merupakan persegi panjang. 3) Siswa deduksi informal dalam memecahkan masalah matematika menggunakan strategi membuat gambar, berpikir logis, menulis persamaan atau kalimat terbuka serta menerka dan menguji, subjek deduksi informal telah memahami bahwa persegi merupakan persegipanjang.This study aimed to describe the mathematical problem-solving strategy of junior high school students based on Van Hiele levels of geometry thinking, namely visualization, analysis and informal deduction. This study was a qualitative research that produced descriptive data. Subjects of this study consisted of three students of class VIII-F SMPN 1 Waru, Sidoarjo. The study began by determining the subject of research by using Van Hiele’s geometry test, and then given problem solving task and interviews. For checking the validity of the data used a triangulation of time. Student problem solving strategies will be analyzed based on the stages of Krulik and Rudnick’s problem solving, which consists of (1) to read and think, (2) explore and plan, (3) selecting a strategy, (4) find the answers, and (5) review and discuss. The results showed that 1) the strategy of visualization student in solving mathematical problems was drew a picture, logical reasoning, wrote an equation or an open sentence, and made organized list, the visualization subject did not understood that a square was a rectangle. 2) The analysis student in solving mathematical problems was used logical reasoning strategies, guessed and checked, and drew a picture, the analysis subject did not understood that a square was a rectangle. 3) The strategy of informal deduction student in solving mathematical problem was drew a picture, logical reasoning, wrote an equation or an open sentence and guessed and checked, the subject of informal deductions had understood that a square was a rectangle. 
Students' Mental Load Viewed from Self-Compassion Ayuningrum, Diah; Naini, Rohmatus; Muarifah, Alif; Nugraha, Ariadi
International Journal of Applied Guidance and Counseling Vol. 7 No. 1 (2026)
Publisher : Universitas Mercu Buana Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26486/ijagc.v7i1.4989

Abstract

This study aims to examine the role of self-compassion in mental load among high school students. The study employed a quantitative correlational design and involved 262 students from three high schools in Yogyakarta. Data were collected using the Mental Load Scale and the Self-Compassion Scale. Based on the results of this study, both instruments showed adequate validity and reliability as indicated by AVE, Cronbach’s Alpha, and Composite Reliability values. Analysis was conducted using Partial Least Squares (PLS) based Structural Equation Modeling with SmartPLS 4.0. The validity results showed that all aspects had an Average Variance Extracted (AVE) > 0.50, while internal reliability for all aspects was good with Cronbach’s Alpha and Composite Reliability >0.70. The results showed that total self-compassion had a significant role in total mental load (β = 0.133, p < 0.05) and mental load aspects (β = 0.025, p < 0.05). However, total self-compassion also played an indirect role in mental effort aspects through total mental load as a mediator (T-statistic > 1.96, p < 0.05). The R-square values indicate strong predictive ability in most aspects, including the mental load aspect (0.942) and the mental effort aspect (0.936). These findings indicate that students with higher levels of self-compassion tend to cope more adaptively with academic and emotional pressures. Therefore, school-based guidance and counseling services can be utilized to help students manage mental load by strengthening self-compassion through individual or group counseling.