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Cartesius
Published by Universitas Katolik Santo Thomas
ISSN : 26232251     EISSN : 28286847     DOI : 10.54367
Core Subject : Education,
Mathematics
Jurnal Cartesius merupakan wadah informasi yang berisi artikel ilmiah penelitian, studi literatur, gagasan, aplikasi teori, kajian analisis kritis, dan penelitian lainnya di bidang matematika dan pendidikan matematika. Jurnal Cartesius diterbitkan dua kali dalam satu tahun, Januari dan Desember, yang diterbitkan oleh Program Studi Pendidikan Matematika Universitas Katolik Santo Thomas Medan.
Arjuna Subject : Matematika - Aljabar dan Teori Bilangan
Articles 6 Documents
 1 
Search results for , issue "Vol 1 No. 1 Tahun 2018" : 6 Documents clear
Efektivitas Pembelajaran Matematika Realistik Terhadap Kemampuan Pemecahan Masalah Matematik Siswa Kelas VII SMP Sinaga, Ananda Ria Pertiwi
CARTESIUS : Jurnal Pendidikan Matematika Vol 1 No. 1 Tahun 2018
Publisher : Unika Santo Thomas Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (476.197 KB) | DOI: 10.54367/cartesius.v1i1.469

Abstract

This study aims to (1) find out whether the mathematical problem-solving abilities of students who are taught by realistic mathematics learning were higher than those students who were taught using conventional learning; (2) knowing students' learning attitudes towards realistic mathematics learning approaches. This research is a quasi-experimental study with a quantitative approach. This research was conducted in class VII of the Junior High School 28 Medan 2017/2018 Academic Year where the population of this study was all class VII. Samples from this study were class VII-G as the experimental class and class VII-F as the control class. Based on the results of the analysis of calculations, the following data are obtained: (1) the results of analysis of realistic mathematical learning on students' mathematical problem-solving abilities using the t-test found that ttable = 1.68 and tcount = 3.6821 so tcount> ttable then concluded that H0 is rejected and Ha be accepted. The mathematical problem-solving abilities of students who are taught by realistic mathematics learning was higher than conventional learning. (2) student responses were very positive towards realistic mathematics learning with an average of ≥ 86.03.
Pengaruh Penerapan Pendekatan Kontekstual Terhadap Kemampuan Berpikir Kritis Matematika Siswa SMP St.Thomas 1 Medan Br. Barus, Elsa Manora
CARTESIUS : Jurnal Pendidikan Matematika Vol 1 No. 1 Tahun 2018
Publisher : Unika Santo Thomas Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (532.6 KB) | DOI: 10.54367/cartesius.v1i1.470

Abstract

The study aimed to determine the effect of applying a contextual approach to students' critical thinking skills in mathematics on cube and beam material. This research is a quasi-experimental quantitative research design with pretest-posttest control group design. The population in this study were eighth-grade students at Junior High School of  St. Thomas 1 Medan. The sample in the study was selected by random sampling consisting of the experimental class (VIII-D) and the control class (VIII-E). The pretest and posttest results were analyzed using the normality and homogeneity test and the results showed that the samples were normally distributed and homogeneous. Furthermore, a correlation and regression test was conducted to describe the relationship between contextual approaches and students' critical thinking skills. Based on correlation and regression analysis, the results obtained that the application of the contextual approach has a positive effect with the correlation coefficients of the experimental class and the control class respectively 0.914 and 0.860 and the coefficient of determination is 83.5% and 73.9% respectively. So that the application of a contextual approach has a better effect on students' critical thinking skills compared to conventional learning. Based on the results of the calculation of the test of the difference in the two average mathematical critical thinking skills obtained by tcount = 2.113 > ttable = 1.99, then the hypothesis Ho is rejected. So it is concluded that the average increase in critical thinking skills of students who get learning with contextual approaches is higher than students who get conventional learning.
Penerapan Pembelajaran Matematika Realistik Untuk Meningkatkan Kemampuan Pemahaman Matematis Siswa Pada Materi Bentuk Aljabar di Kelas VII SMP Sinaga, Nurvitri
CARTESIUS : Jurnal Pendidikan Matematika Vol 1 No. 1 Tahun 2018
Publisher : Unika Santo Thomas Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (505.27 KB) | DOI: 10.54367/cartesius.v1i1.472

Abstract

This study aims to determine the level of mathematical understanding ability of students before and after the application of realistic mathematics learning and to describe the application of the Realistic Mathematics Learning approach at Nempu Hilir State Middle School 3 in the algebraic material form. This type of research is Classroom Action Research. The research subjects were seventh grade students of State Junior High School 3 Siempat, Nempu Hilir 2017/2018 Academic Year, amounting to 30 people. The results of this study indicate that the level of mathematical understanding of students in class VII-C State Junior High School 3 Siempat Nempu Hilir before and after the application of Realistic Mathematics Learning increased. The application of realistic mathematical learning approaches is applied in several steps, namely first, providing contextual problems. Second, explain contextual problems. Third, resolve contextual problems. Fourth, discuss answers. Fifth, conclude. The implementation of a realistic mathematics learning approach in the State Junior High School 3 Siempat of Nempu Hilir in the algebraic form material has been classified as good.
Pengaruh Model Creative Problem Solving (CPS) Terhadap Kemampuan Berpikir Kritis Matematis Pada Materi Relasi dan Fungsi Maria, Sonta
CARTESIUS : Jurnal Pendidikan Matematika Vol 1 No. 1 Tahun 2018
Publisher : Unika Santo Thomas Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (521.9 KB) | DOI: 10.54367/cartesius.v1i1.473

Abstract

The purpose of this study was to determine the effect of the Creative Problem Solving (CPS) learning model on students' critical thinking skills in the material relations and functions and student responses to the CPS learning model. This research is a quasi-experiment. The results of the study obtained a regression equation Y = 62.1621 + 15.7094X with a coefficient of determination of 23% which indicates that there is a positive influence. The average value of mathematical critical thinking abilities of students who take part in the learning with the CPS model is 77.87, while expository learning is 62.16. Analysis of student responses to the CPS learning model was obtained: (1) 97.3% expressed interest in the CPS learning model and 2.7% expressed no interest; (2) A total of 98.2% stated that there were benefits obtained by students using the CPS learning model and 1.8% stated that there were no benefits obtained; (3) A total of 90.74% stated that there were no obstacles experienced during the learning process using the CPS learning model and 9.26% stated that they experienced problems; (4) 96.22% expect that the CPS learning model is used in the learning process and 3.78% do not expect to be used. So, it was concluded that the student response was very positive towards the CPS learning model because the percentage that stated the agreement was 95.62% greater than the one who expressed disagreement namely 4.38%.
Pengaruh Model Pembelajaran Kooperatif Tipe Team Assisted Individualization (TAI) Terhadap Kemampuan Berpikir Kritis Siswa di Kelas VIII SMP Tamsar, Theresia Appri Robelina
CARTESIUS : Jurnal Pendidikan Matematika Vol 1 No. 1 Tahun 2018
Publisher : Unika Santo Thomas Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (682.81 KB) | DOI: 10.54367/cartesius.v1i1.474

Abstract

This study aims to (1) find out whether there is an effect of Team Assisted Individualization (TAI) Cooperative learning model on students' critical thinking skills; (2) to find out whether the critical thinking skills of students who obtain the Cooperative Learning Team Type Assisted Individualization (TAI) model are higher compared to students who obtain the expository learning model. The population in this study were eighth grade students of SMP Negeri 28 Medan. By random sampling selected class III-C as an experimental class as many as 40 students and class III-B as a control class as many as 40 students. The data used in this study is quantitative data. Based on the analysis of research data, the following results were obtained: (1) The regression analysis results obtained equation Y 63 = 63,351 + 11,676X, from the regression results it was found that the Cooperative Assisted Individualization (TAI) learning model had a positive effect on students' critical thinking skills of 11,676 . Where the correlation coefficient is 0.400 and the coefficient of determination is 16%. So it can be concluded that the Cooperative Individualization (TAI) Type Learning Learning model influences students' critical thinking skills, (2) The results of t-test analysis with the value of tcount = 3.717 and t table = 1.666 which means tcount> t table, then the hypothesis H0 is rejected. So that it can be concluded that students who obtain the Cooperative Type Team Assisted Individualization (TAI) learning model are higher than students who obtain the expository learning model.
Pengaruh Model Pembelajaran Discovery Learning Terhadap Kemampuan Pemahaman Konsep Matematis Siswa Kelas IX SMP Negeri 5 Sumbul Sihotang, Verawaty
CARTESIUS : Jurnal Pendidikan Matematika Vol 1 No. 1 Tahun 2018
Publisher : Unika Santo Thomas Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (556.427 KB) | DOI: 10.54367/cartesius.v1i1.475

Abstract

This study aims to determine the ability to understand the mathematical concepts of students who take part in learning with the discovery learning model higher than the ability to understand the mathematical concepts of students who follow conventional learning and student responses to the discovery learning model. This research was conducted at 5 Sumbul Junior High School in  2017/2018 Academic Year. The sample in this study was class IX-1 as an experimental class as many as 35 people and class IX-2 as a control class of 35 people. The research method used was the quasi-experimental method with the design of pretest-posttest control in group design. Hypothesis test results show at the significance level = 0.05 the value of t count = 4.964> t table = 1.667. So that H0 is rejected and Ha is accepted, which means that the ability to understand the mathematical concepts of students who take part in learning with the discovery learning model is higher than the comprehension abilities of students who take conventional learning. The results of the questionnaire analysis of student responses to the discovery learning model were obtained: (1) 98.57% of students were interested; (2) 96.67% of students stated that there were benefits obtained; (3) 75% of students stated that there were no obstacles experienced during the learning process; and (4) 84.76% of students hope that the discovery learning model is used in the learning process. This shows that the positive student response to the discovery learning model.

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