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Pengaruh penggunaan bahan ajar liveworksheets dengan pendekatan saintifik untuk kemampuan pemecahan masalah matematis siswa pada pembelajaran materi statistika SMP Agustiana, Wina; Novtiar, Chandra
JPMI (Jurnal Pembelajaran Matematika Inovatif) Vol. 6 No. 6 (2023): November
Publisher : IKIP Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/jpmi.v6i6.20756

The aim of this research is to examine the effect of using Liveworksheets-based teaching materials in improving mathematical problem solving abilities in statistics material for class VIII junior high school students. The research method used is descriptive qualitative method. The research subjects for this study were class VIII students at SMPN 15 Cimahi consisting of 25 students. The results of this research show that the use of Liveworksheets based teaching materials can improve mathematical problem solving abilities, as evidenced by the average increase in students' mathematical problem solving ability tests before the use of the teaching materials demonstrated, which is equal to 27.20 and after use, teaching materials equivalent to 70.00. Not only that, this study influences students' mathematical problem solving abilities, seen from the results of the t-sample test calculation related to the paired-sample T-test analysis of the two-sided test. The values obtained are tcount = 13,833 and ttable = 1.7109 for a significance level of 5% with df = 24, where 13.833 ≥ 1.7109.

Meningkatkan kemampuan pemecahan masalah matematis siswa SMP IT Al-Ajwa Al-Islamy kelas VII melalui model discovery learning berbantuan video animasi Agustin, Amellia Putri; Sabandar, Jozua; Novtiar, Chandra
JPMI (Jurnal Pembelajaran Matematika Inovatif) Vol. 7 No. 4 (2024): Juli
Publisher : IKIP Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/jpmi.v7i4.24626

This research aims to see the improvement in mathematical problem solving abilities of class VII middle school students through the Discovery Learning Learning Model assisted by animated videos. This research is experimental research. The population in this study were class VII students, while the sample was students from class VII A as the experimental class and VII B as the control class at SMP IT Al-ajwa Al-Islamy. This research uses the Nonequivalent Pretest-Posttest Control Group Design research design. The research instrument used was an essay question with a total of 7 questions. The data obtained will be analyzed and processed using a 2 independent sample test using a normality test, a homogeneity test first as a prerequisite and followed by a t-test. The results of hypothesis testing using the Independent Sample T-Test show that the significant value is 0.000 ≤ 0.05, so is rejected. So, it can be concluded that the Discovery Learning Model assisted by animated videos to improve the mathematical problem solving abilities of Al-Ajwa Al-Islamy IT Middle School students is better and has increased.

Analysis of Mathematical Connection Ability and Self-Confidence on Junior High School Students Awalia, Anisa Rizki; Novtiar, Chandra
(JIML) JOURNAL OF INNOVATIVE MATHEMATICS LEARNING Vol. 7 No. 3 (2024): VOLUME 7 NUMBER 3, SEPTEMBER 2024
Publisher : IKIP Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/jiml.v7i3.20610

This research is motivated by the importance of students’ mathematical connection abilities and self-confidence in learning mathematics. Mathematical connection ability is an important factor in understanding mathematical concepts. The aim of this research is to analyze the level of students’ mathematical connection abilities and junior high school students’ self-confidence. The method used in this research is a descriptive-qualitative method. The research subjects were 37 students in class VIII-C of SMPN 3 Margahayu. The instruments used were four items of mathematical connection test material on the System of Two-Variable Linear Equations and non-tests of students’ confidence in learning mathematics. The results of the analysis show that the average score of all mathematical connection ability test questions in indicator 1 using relationships between mathematical topics is 5%, indicator 2 is understanding equivalent representations of the same concept (36%), indicator 3 uses mathematics in everyday life (52%), and indicator 4 uses mathematics in other subjects (27%). So the average is 30%. So the students’ mathematical connection ability is included in the low category. Most students are unable to solve problems with indicators using relationships between mathematical topics. This is shown by the results of the mathematical connection ability test; students did not connect optimally. But in learning mathematics, students already have good self-confidence.

Meningkatkan kemampuan komunikasi matematis siswa SMP PGRI 1 Cimahi kelas VIII melalui pendekatan realistic mathematics education (RME) Sarah, Siti; Sabandar, Jozua; Novtiar, Chandra
JPMI (Jurnal Pembelajaran Matematika Inovatif) Vol. 7 No. 5 (2024): JPMI
Publisher : IKIP Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/jpmi.v7i5.24666

The aim of this research is to examine the influence of the Realistic Mathematics Education (RME) approach in improving students' mathematical communication ability. In this research, a quasi-experiment was used, with the research using the non-equivalent pretest-posttest control group design. Eighth grade students at PGRI 1 Cimahi Middle School were the subjects of the research. To measure mathematical communication ability, data was obtained from four test questions that had been tested previously. Next, the data obtained will be analyzed and processed using analysis of 2 dependent samples using a normality test first, followed by a paired t-test. Mathematical communication ability improve much better for students who use the RME Approach compared to students who use the regular learning approach.

Penerapan model problem based learning berbantuan edpuzzle dalam meningkatkan kemampuan pemahaman matematis siswa kelas VII SMP Nurlaela, Siti; Yuliani, Anik; Novtiar, Chandra
JPMI (Jurnal Pembelajaran Matematika Inovatif) Vol. 7 No. 6 (2024): JPMI
Publisher : IKIP Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/jpmi.v7i6.25087

Most students consider mathematics to be one of the most challenging subjects. The low level of math comprehension among middle school students is a driving force for this study. The purpose of this study is to improve students' mathematical comprehension skills by utilizing the PBL approach with the help of Edpuzzle. This research method uses quasi-experimentation, which is carried out by taking 2 classes, namely the experimental class and the control class. The subjects in this study are 54 students in grades VII-B and VII-C SMP Dharma Kartini for the 2023/2024 school year. The instrument used is in the form of a description test using indicators of mathematical comprehension ability. The description questions used are 4 questions in social arithmetic material. The data from the study was processed using 2 independent samples using the normality test and the Mann-Whitney test. The results of the analysis showed that the improvement of mathematical comprehension skills of grade VII junior high school students whose learning using the Problem Based Learning model assisted by Edpuzzle was better than that of those using conventional learning.

PENGEMBANGAN BAHAN AJAR BERBANTUAN VBA POWERPOINT DALAM MENDUKUNG KEMAMPUAN PEMECAHAN MASALAH SISWA Chandra Novtiar; Nirwanty Angela Al Ghani
JUMLAHKU: Jurnal Matematika Ilmiah STKIP Muhammadiyah Kuningan Vol 9 No 1 (2023): JUMLAHKU VOL.9 NO.1 2023
Publisher : Program Studi Pendidikan Matematika Universitas Muhammadiyah Kuningan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33222/jumlahku.v9i1.2890

Penelitian ini dilaksanakan dengan tujuan untuk menghasilkan bahan ajar berbantuan teknologi yakni dengan VBA PowerPoint, agar terciptanya bahan ajar yang efektif, praktis, layak digunakan dan tidak membosankan dengan pendekatan kontekstual, untuk melihat kemampuan pemecahan masalah matematis siswa. Penelitian dilakukan di dua sekolah yang ada di Cimahi. Penelitian ini menggunakan metode penelitian pengembangan dengan subjek dari penelitian ini diambil dari 2 tingkat yang berbeda yakni untuk uji terbatas terdiri dari 14 siswa dari kelas 8-A, uji luas terdiri dari 25 siswa dari kelas 8-B di SMPN 16 Cimahi dan uji produk di kelas 7-I SMPN 4 Cimahi. Dalam penelitian ini, digunakan instrumen berupa lembar wawancara pada studi pendahuluan, skala pendapat siswa terhadap bahan ajar, lembar validasi ahli, lima butir instrumen tes kemampuan pemecahan masalah matematis siswa. Materi yang digunakan dalam penelitian ini adalah segiempat dan segitiga. Data postes kemampuan pemecahan masalah matematis dianalisis menggunakan perhitungan Ms. Excel. Penelitian menunjukkan bahwa: (1) 70,6% siswa pada uji coba terbatas memperlihatkan bahwa bahan ajar yang akan digunakan praktis dan masih ada revisi, serta diperoleh persentase 82,6% dari validator ahli yang menunjukkan bahwa bahan ajar yang akan digunakan sangat valid tetapi masih tergolong rendah dan proses revisi masih diperlukan. Pada uji coba luas 80,22% siswa menunjukkan bahwa bahan ajar yang digunakan termasuk ke dalam kriteria sangat praktis dan 87,3% dari validator menunjukkan bahwa bahan ajar yang digunakan sangat praktis dan menunjukkan peningkatan pada uji coba terbatas; (2) skenario dan implementasi berjalan sesuai RPP yang telah disusun; (3) kesulitan yang dialami siswa pada saat menjawab soal pemecahan masalah matematis ialah pada mengubah soal cerita dalam bentuk gambar dan menyusun langkah-langkah penyelesaian dengan baik dan benar; (4) pada tahap uji coba produk pengembangan bahan ajar menggunakan VBA PowerPoint cukup efektif untuk melatih pemecahan masalah matematis setiap siswa.

PENGEMBANGAN BAHAN AJAR BERBANTUAN VBA POWERPOINT DALAM MENDUKUNG KEMAMPUAN PEMECAHAN MASALAH SISWA Chandra Novtiar; Nirwanty Angela Al Ghani
JUMLAHKU: Jurnal Matematika Ilmiah STKIP Muhammadiyah Kuningan Vol 9 No 1 (2023): JUMLAHKU VOL.9 NO.1 2023
Publisher : Program Studi Pendidikan Matematika Universitas Muhammadiyah Kuningan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33222/jumlahku.v9i1.2890

Penelitian ini dilaksanakan dengan tujuan untuk menghasilkan bahan ajar berbantuan teknologi yakni dengan VBA PowerPoint, agar terciptanya bahan ajar yang efektif, praktis, layak digunakan dan tidak membosankan dengan pendekatan kontekstual, untuk melihat kemampuan pemecahan masalah matematis siswa. Penelitian dilakukan di dua sekolah yang ada di Cimahi. Penelitian ini menggunakan metode penelitian pengembangan dengan subjek dari penelitian ini diambil dari 2 tingkat yang berbeda yakni untuk uji terbatas terdiri dari 14 siswa dari kelas 8-A, uji luas terdiri dari 25 siswa dari kelas 8-B di SMPN 16 Cimahi dan uji produk di kelas 7-I SMPN 4 Cimahi. Dalam penelitian ini, digunakan instrumen berupa lembar wawancara pada studi pendahuluan, skala pendapat siswa terhadap bahan ajar, lembar validasi ahli, lima butir instrumen tes kemampuan pemecahan masalah matematis siswa. Materi yang digunakan dalam penelitian ini adalah segiempat dan segitiga. Data postes kemampuan pemecahan masalah matematis dianalisis menggunakan perhitungan Ms. Excel. Penelitian menunjukkan bahwa: (1) 70,6% siswa pada uji coba terbatas memperlihatkan bahwa bahan ajar yang akan digunakan praktis dan masih ada revisi, serta diperoleh persentase 82,6% dari validator ahli yang menunjukkan bahwa bahan ajar yang akan digunakan sangat valid tetapi masih tergolong rendah dan proses revisi masih diperlukan. Pada uji coba luas 80,22% siswa menunjukkan bahwa bahan ajar yang digunakan termasuk ke dalam kriteria sangat praktis dan 87,3% dari validator menunjukkan bahwa bahan ajar yang digunakan sangat praktis dan menunjukkan peningkatan pada uji coba terbatas; (2) skenario dan implementasi berjalan sesuai RPP yang telah disusun; (3) kesulitan yang dialami siswa pada saat menjawab soal pemecahan masalah matematis ialah pada mengubah soal cerita dalam bentuk gambar dan menyusun langkah-langkah penyelesaian dengan baik dan benar; (4) pada tahap uji coba produk pengembangan bahan ajar menggunakan VBA PowerPoint cukup efektif untuk melatih pemecahan masalah matematis setiap siswa.

Pengembangan Media Visual Basic Application untuk Meningkatkan Kemampuan Penalaran Siswa SMP dengan Pendekatan Open-Ended Rohaeti, Euis Eti; Bernard, Martin; Novtiar, Chandra
SJME (Supremum Journal of Mathematics Education) Vol 3 No 2 (2019): July 2019
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Singaperbangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35706/sjme.v3i2.1897

Penelitian ini memiliki tujuan mengetahui pengaruh media pembelajaran Visual Basic Application (VBA) for Microsoft Powerpoint dan Excel pada materi peluang terhadap kemampuan penalaran matematis siswa SMP. Sampel pada penelitian ini adalah 23 siswa kelas VIII salah satu SMP di Kota Cimahi Tahun Pelajaran 2018/2019. Pengambilan data diperoleh dengan metode tes untuk menentukan kemampuan penalaran matematis siswa yang kemudian dianalisis ketercapaian dan kesulitan siswa pada setiap indikator yang menjadi dasar pengembangan media pembelajaran. Media kemudian diujicobakan kembali dalam pembelajaran. Hasil dari penelitian ini adalah adanya pengaruh media pembelajaran Visual Basic Application (VBA) for Microsoft Powerpoint dan Excel dalam meningkatkan kemampuan penalaran siswa pada materi peluang, dan media tersebut dapat membantu guru saat menggunakan pendekatan Open-Ended sehingga pembelajaran di kelas lebih efektif, serta menciptakan pembelajaran peluang menjadi interaktif dan menyenangkan.

HUBUNGAN ANTARA SELF-CONCEPT TERHADAP KEMAMPUAN BERPIKIR KREATIF MATEMATIS SISWA MTSN 4 BANDUNG BARAT Romlah, Siti; Novtiar, Chandra
Nusantara of Research : Jurnal Hasil-hasil Penelitian Universitas Nusantara PGRI Kediri Vol 5 No 1 (2018)
Publisher : Universitas Nusantara PGRI Kediri

The purpose in this research is examine and describe the relationship between self-concept with students' mathematical creative thinking ability. The method used is descriptive with correlation technique. The population this research is all students of class VII MTSN 4 West Bandung academic year 2017/2018. The samples used were chosen by purposive sampling as many as 35 students. The data collected are test results of mathematical creative ability and questionnaires about self-concept. The instrument used consists of 5 questions of creative thinking ability in the form of a description and 24 statements about student self-concept. Statistical data processing was done by SPSS 21 software that uses product moment correlation test then the result is analyzed descriptively. Based on the research result, it can be concluded that there is a relationship between self-concept to the ability of mathematical creative thinking with correlation of 0.792 at the level of significance 0.000 and the coefficient of determination of 62,73% with good relationship classification. This means that variations in creative thinking can be explained by variations in self-concept, the higher the self-concept of the students ,the higher the ability to think mathematically.

ANALISIS KOMUNIKASI MATEMATIS SISWA SMP PADA MATERI SEGI EMPAT Dilla, Risa Sapta; Adriati, Nuraeni; Novtiar, Chandra
Nusantara of Research : Jurnal Hasil-hasil Penelitian Universitas Nusantara PGRI Kediri Vol 5 No 1 (2018)
Publisher : Universitas Nusantara PGRI Kediri

This study has purpose to describe the achievement of students' mathematical communication with observation and interview. In this study, the method used is descriptive qualitative with the subject of 30 students SMPN 2 Ngamprah class VII. The instrument consists of 4 test questions. The result of the research is the percentage indicator of ability to connect the real object and the image into the form of mathematical idea is 41,67%, arrange conjecture, make argument, and generalize percentage of ability equal to 49,17%, explain idea, mathematical situation in writing by using picture ie reaching 57.78%, declaring everyday events in language or mathematical symbols, the percentage of ability is 24.67%

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