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PENERAPAN MODEL PEMBELAJARAN SELF ORGANIZED LEARNING ENVIRONMENTS (SOLE) UNTUK MENINGKATKAN KEMAMPUAN BERPIKIR KRITIS MATEMATIKA SISWA KELAS VII-2AN KEMAMPUAN BERPIKIR KRITIS MATEMATIKA SISWA KELAS VII-2 Simamora, Joice Ronitua; Yuni Rhamayani; Nova Christina Dewi
Journal Education Innovation (JEI) Vol. 3 No. 1 (2025): Januari 2025
Publisher : Yayasan Perguruan Kampus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65474/2dhstf23

This type of research is Classroom Action Research which aims to improve students' critical thinking skills in mathematics through the Self Organized Learning Environments (SOLE) learning model. The subjects in this study were students of class VII 2 SMP Negeri 5 Padangsidimpuan. The object in this study is the application of the Self Organized Learning Environments (SOLE) learning model to improve the critical thinking ability of mathematics students in class VII 2 of SMP Negeri 5 Padangsidimpuan in the 2023/2024 academic year. In terms of the level of students' mathematical critical thinking ability, after the implementation of PTK actions, it can be seen from the students' mathematical critical thinking ability test with a percentage of assessment in cycle I 66.67% with the category “Fair” and the percentage of cycle II assessment 85.18% with the category “Good”. Based on the observation of student activity in cycle I, it was obtained that the level of student activity was 67.42% in the “Fair” category and in cycle II there was an increase in student activity to 83.91% in the “Good” category. The conclusions in this study are (1) the use of the Self Organized Learning Environments (SOLE) learning model can improve students' critical thinking skills in mathematics on the material of triangular flat shapes in class VII-2; (2) The use of the Self Organized Learning Environments (SOLE) learning model can increase student activity on the material of triangular flat shapes in class VII-2.

Penerapan Pembelajaran Kooperatif Tipeteam Games Tournment (TGT)Untuk Meningkatkan Aktivitas Belajarmatematika Siswa Kelas VIII MTs YPKS Padangsidimpuan Siti Gabena Hasibuan; Nova Christina Dewi; Nurdalilah
Jurnal Cermatika Vol. 3 No. 2 (2023): JURNAL CERMATIKA VOLUME 3 NOMOR 2 BULAN OKTOBER TAHUN 2023
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

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This research aims to determine the increase in student learning activities with Team Games Tournament (TGT) type cooperative learning at MTs YPKS Padangsidimpuan. This type of research is classroom action research. The object of this research is to increase student learning activities through TGT type cooperative learning in class VIII MTs YPKS Padangsidimpuan. The research subjects were 33 students in class VIII-4. /friend's explanation was 18%, the activity of reading student books/LKS was 2.5%, the activity of noting the explanation of the teacher/friend/from the book was 12%. , distribution activities by 16%, and activities that are not relevant to learning by 51%. So it was found that student activities for each activity category had not yet reached the ideal activity criteria. The results of the analysis after being given action II were from the results of observing the activity of listening/paying attention to the teacher/friend's explanation by 46%, the activity of reading student books/LKS by 7.5%, the activity of noting the teacher/friend's explanation/from the book by 10.5%, the activity division was 19%, and activities that were not relevant to learning were 17%. This shows that student activities for the four activity categories have experienced improvement, but have met the ideal activity criteria

Pengaruh Penerapan Model Pace Terhadap Kemampuan Pemecahan Masalah Matematika Siswa Pada Materi Theorema Pythagoras Di MTs YPKS Sapriani Lubis; Nova Christina Dewi; adek Nilasari Harahap
Jurnal Cermatika Vol. 3 No. 1 (2023): VOLUME 3 NOMOR 1 BULAN APRIL TAHUN 2023
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

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Penelitian ini bertujuan antara lain : untuk mengetahui pengaruh penerapan model PACE terhadap kemamapuan pemecahan masalah matematika siswa pada materi theorema pythagoras di MTs YPKS Padangsidimpuan. Jenis penelitian ini adalah Quasi Eksperimen. Subjek penelitian ini adalah kelas VIII-1 dan VIII-2 yang berjumlah sebanyak 52 orang. Untuk mengukur kemampuan pemecahan masalah matematika siswa. Hasil penelitian menunjukkan terdapat perbedaan yang signifikan antara lain nilai rata-rata kelas eksperimen dan kelas kontrol. Hasil analisis data diketahui bahwa terdapat pengaruh penerapan pembelajaran PACE lebih baik dibandingkan dengan metode konensional. Rata-rata hasil belajar siswa pada kelas Eksperimen sebesar 84,03 dan untuk kelas Kontol rata-rata sebesar 76,34. Hasil uji statistik diterapkan dalam penelitian ini diperoleh rhitung sebesar 0,689, sementara rtabel nya 0,388. Dan nilai rxy nya sebesar 0,747, termasuk dalam kategori kuat. Berdasarkan dari rumus N-Gain kita dapat melihat bahwa siswa yang ditelitih termasuk dalam kategori tinggi dengan nilai sebesar 5,378, dan dapat disimpulkan dalam temuan penelitian bahwa hasil belajar menggunakan model PACE lebih baik dari pada menggunakan metode konvensional dengan presentase peningkatan sebesar 10,07 % berpengaruh tehadap kemampuan pemecahan masalah matematika siswa pada materi theoema pythagoras. Bertolak dari hasil penelitian dan kesimpulan tersebut, maka dikemukakan saran untuk meningkatkan kemampuan pemecahan masalah matematika siswa dengan model PACE, sehingga tampak pengaruh yang besar terhadap kemampuan pemecahan masalah matematika siswa dan memperoleh mamfaatnya.

Peningkatan Hasil Belajar Matematika Melalui Model Pembelajaran Think Pair Share DI MA YPKS Sakinah Harahap; Mohd.Arifin Lubis; Nova Christina Dewi
Jurnal Cermatika Vol. 3 No. 1 (2023): VOLUME 3 NOMOR 1 BULAN APRIL TAHUN 2023
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

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Penelitian ini menunjukkan bahwa dengan menggunakan model pembelajaran tipe Think Pair Share dapat menjadi variasi pembelajaran yang menyenangkan bagi peserta didik sehingga terbukti meningkat hasil belajar di kelas X MA YPKS Padangsidimpuan. Subjek penelitian ini adalah siswa kelas X MA YPKS Padangsidimpuan yang berjumlah 24 orang, yang dimana siswa perempuan berjumlah 15 orang dan laki laki berjumlah 9 orang. Penelitian ini dilaksanakan pada semester ganjil di MA YPKS Padangsidimpuan kelas X tahun ajaran 2022-2023. Jenis penelitian ini adalah penelitian tindakan kelas. Berdasarkan hasil penelitian pada siklus I dan siklus II diperoleh bahwa hasil belajar matematika siswa mengalami peningkatan. Pada siklus I rata-rata persentase hasil belajar siswa adalah 60,41% sedangkan pada siklus II rata-rata persentase hasil belajar siswa mencapai 68,12 %. Peningkatan hasil belajar siswa sebesar 7,71%. Dengan demikian Penerapan model pembelajaran think pair share dapat meningkatkan hasil belajar siswa kelas X MA YPKS Padangsidimpuan.

Pengaruh Metode Kooperatif Learning Tipe Snowball Throwing Terhadap Kemampuan Komunikasi Matematika Siswa SMP Negeri 5 Padangsidimpuan Wulan Eka Putri Siregar; Susi Sulastri Lubis; Nova Christina Dewi
Jurnal Cermatika Vol. 4 No. 2 (2024): VOLUME 4 NOMOR 2 BULAN OKTOBER TAHUN 2024
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

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This study aims to see whether or not there is an effect of snowball throwing type cooperative learning method on mathematical communication skills of seventh grade students of SMP Negeri 5 Padangsidimpuan. This type of research is a pseudo experiment. The research samples were VII-5 and VII-8 classes totaling 40 students. The data collection technique used is an essay-shaped test of 5 questions that have been tested with pretest and posttest reliability using the Cronbach's alpha formula in the spss application with a significant level of 5% and n = 20 which is then compared to the r table obtained a value of 0.444. It turns out that rcount> rtabel is (0.608>0.444) for the pretest and (0.556>0.444) for the posttest. Data analysis using normality test, homogeneity test and hypothesis testing. The pretest results of the average value of the experimental and control classes were 63.8 and 64.05, respectively. For the posttest results, the average value of the experimental class was 82.75 and the control class was 75.65. The normality test of the pretest and posttest of the experimental and control classes has sig>0.05 and the homogeneity test of the significant value is above 0.05 or sig>0.05, so the experimental class and control class have homogeneous data conditions. For the hypothesis test, a significant value of 0.039 or 0.039 <0.05 was obtained. Thus the researcher concluded that there was an effect of the snowball throwing type cooperative learning method on the mathematical communication skills of SMP Negeri 5 Padangsidimpuan.

Penerapan Pembelajaran Kooperatif Tipeteam Games Tournment (TGT)Untuk Meningkatkan Aktivitas Belajarmatematika Siswa Kelas VIII MTs YPKS Padangsidimpuan Hasibuan, Siti Gabena; Nova Christina Dewi; Nurdalilah
JURNAL CERMATIKA Vol. 3 No. 2 (2023): Jurnal Cermatika Vol 3 No 2 Oktober 2023
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64168/cermatika.v3i2.1340

This research aims to determine the increase in student learning activities with Team Games Tournament (TGT) type cooperative learning at MTs YPKS Padangsidimpuan. This type of research is classroom action research. The object of this research is to increase student learning activities through TGT type cooperative learning in class VIII MTs YPKS Padangsidimpuan. The research subjects were 33 students in class VIII-4. /friend's explanation was 18%, the activity of reading student books/LKS was 2.5%, the activity of noting the explanation of the teacher/friend/from the book was 12%. , distribution activities by 16%, and activities that are not relevant to learning by 51%. So it was found that student activities for each activity category had not yet reached the ideal activity criteria. The results of the analysis after being given action II were from the results of observing the activity of listening/paying attention to the teacher/friend's explanation by 46%, the activity of reading student books/LKS by 7.5%, the activity of noting the teacher/friend's explanation/from the book by 10.5%, the activity division was 19%, and activities that were not relevant to learning were 17%. This shows that student activities for the four activity categories have experienced improvement, but have met the ideal activity criteria

Pengaruh Metode Kooperatif Learning Tipe Snowball Throwing Terhadap Kemampuan Komunikasi Matematika Siswa SMP Negeri 5 Padangsidimpuan Wulan Eka Putri Siregar; Susi Sulastri Lubis; Nova Christina Dewi
JURNAL CERMATIKA Vol. 4 No. 2 (2024): Jurnal Cermatika Vol 4 No 2 Oktober 2024
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64168/cermatika.v4i2.1498

This study aims to see whether or not there is an effect of snowball throwing type cooperative learning method on mathematical communication skills of seventh grade students of SMP Negeri 5 Padangsidimpuan. This type of research is a pseudo experiment. The research samples were VII-5 and VII-8 classes totaling 40 students. The data collection technique used is an essay-shaped test of 5 questions that have been tested with pretest and posttest reliability using the Cronbach's alpha formula in the spss application with a significant level of 5% and n = 20 which is then compared to the r table obtained a value of 0.444. It turns out that rcount> rtabel is (0.608>0.444) for the pretest and (0.556>0.444) for the posttest. Data analysis using normality test, homogeneity test and hypothesis testing. The pretest results of the average value of the experimental and control classes were 63.8 and 64.05, respectively. For the posttest results, the average value of the experimental class was 82.75 and the control class was 75.65. The normality test of the pretest and posttest of the experimental and control classes has sig>0.05 and the homogeneity test of the significant value is above 0.05 or sig>0.05, so the experimental class and control class have homogeneous data conditions. For the hypothesis test, a significant value of 0.039 or 0.039 <0.05 was obtained. Thus the researcher concluded that there was an effect of the snowball throwing type cooperative learning method on the mathematical communication skills of SMP Negeri 5 Padangsidimpuan.

Analisis Kesulitan Siswa Dalam Menyelesaikan Soal Pada Materi Barisan dan Deret Aritmatika dengan Menggunakan Model Pembelajaranm Make A MATCH Khoirunnisa; Nova Christina Dewi; Puspa Riani Nasution
JURNAL CERMATIKA Vol. 5 No. 1 (2025): Jurnal Cermatika Vol 5 No 1 April 2025
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64168/cermatika.v5i1.1584

This research aims to determine: (1) students' difficulties in understanding the concept of arithmetic sequences and series, (2) students' difficulties in applying the principles of arithmetic sequences and series in solving problems, and (3) students' difficulties in finding information contained in sequences and arithmetic series questions. arithmetic series using the Make a Match learning model in class XI IPS 1 SMA NEGRI 8 Padangsidimpuan. The research carried out was qualitative research using qualitative descriptive methods. The subjects in this research were students of class XI IPS 1 SMA NEGRI 8 PADANGSIDIMPUAN. Data collection techniques by means of interviews with tests.The results of the research showed that the 4 students who were interviewed and completed the test questions found that the four students had different difficulties in solving sequence and series story questions. In understanding concepts, students who have difficulty will find it difficult to understand the concept of arithmetic sequences and series and will not be able to apply it to story problems for arithmetic sequences and series. When finding the information contained in the problem, students who experience difficulty will find it difficult to find the information and convert the mathematical information into the form of a mathematical model so they will experience difficulty in determining principles or formulas if the information contained in the story is not known beforehand.

Penerapan Model Pembelajaran Talking Stick Untuk Meningkatkan Keaktifan Belajar Matematika Siswa Pada Materi Himpunan di Kelas VII Mhd. Syukri Harisandi; Nova Christina Dewi; Susi Sulastri Lubis
JURNAL CERMATIKA Vol. 5 No. 1 (2025): Jurnal Cermatika Vol 5 No 1 April 2025
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64168/cermatika.v5i1.1619

This study aims to determine whether there is a significant effect of using the Talking Stick learning model on students' mathematics learning outcomes on set material at SMP Negeri 4 Padangsidimpuan, Padangsidimpuan City on set subject matter. This study used a Non-Equivalent Group Design with one type of treatment where in this study only the experimental class was given treatment while the control class was not given treatment. The samples in this study were two classes taken from the population using the Total Sampling technique. Total Sampling (Saturated Sampling). The samples in this study were students in grades VII-8 and VII-9 of SMP Negeri 4 Padangsidimpuan Padangsidimpuan City in the 2023-2024 school year. the data collection instrument used was a test. The results of research using the Talking Stick learning model on set material in class VII SMP Negeri 4 Padangsidimpuan Padangsidimpuan City. It is known that t-count> t-table (2.194> 2.002) means Ha is accepted and H0 is rejected. So it can be concluded that: There is a Significant Effect on the Use of the Talking Stick Learning Model on Student Mathematics Learning Outcomes in Class VII of SMP Negeri 4 Padangsidimpuan, Padangsidimpuan City.

Pengaruh Strategi Konflik Kognitif Terhadap Kemampuan Representasi Matematis Siswa Kelas X SMK Negeri 1 Siabu Ade Rizky Nasution; Nova Christina Dewi; Nurdalilah
JURNAL CERMATIKA Vol. 5 No. 2 (2025): Jurnal Cermatika Vol 5 No 2 Oktober 2025
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64168/cermatika.v5i2.1665

This study aims to examine the effect of cognitive conflict strategies on the mathematical representation ability of tenth-grade students at SMK Negeri 1 Siabu. The cognitive conflict strategy is believed to stimulate students’ active engagement through the stages of presenting conflict, creating conflict through demonstrations, and resolving it through discussion and reflection. The research employed a quasi-experimental method with a posttest-only control group design. The instruments used were a mathematical representation test and a student response questionnaire. The results showed a significant difference in mathematical representation ability between students who were taught using the cognitive conflict strategy and those who learned through conventional models. Thus, the cognitive conflict strategy is effective in improving students’ mathematical representation ability.

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