Article Per Year (5 Year)
p-Index From 2021 - 2026
0.947
P-Index
This Author published in this journals
All Journal EDUTECH: Jurnal Ilmu Pendidikan dan Ilmu Sosial Jurnal Elemen Genta Mulia : Jurnal Ilmiah Pendidikan Indonesian Journal of Education and Mathematical Science JURNAL ILMIAH SAINS TEKNOLOGI DAN INFORMASI
Ahmad Rahmatika
Universitas Muhammadiyah Sumatera Utara
Aerospace Engineering Computer Science & IT Education Energy Environmental Science Languange, Linguistic, Communication & Media Library & Information Science Mathematics Social Sciences Other

Published : 5 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 5 Documents
Search

 1 
Model Pembelajaran Kooperatif Tipe Think-Talk-Write Berbantuan Software Geogebra Terhadap Kemampuan Komunikasi Siswa Di Kelas XI SMA Al-Hidayah Medan Ahmad Rahmatika
Genta Mulia : Jurnal Ilmiah Pendidikan Vol 13, No 2 (2022): Genta Mulia : Jurnal Ilmiah Pendidikan
Publisher : STKIP Bina Bangsa Meulaboh

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

AbstractPembelajaran matematika yang dilaksanakan dewasa ini lebih cenderung pada pencapaian materi atau sesuai buku wajib yang berorientasi pada soal-soal ujian nasional tanpa memperhatikan kemampuan komunikasi matematis siswa. Bahkan kadang kala orientasinya lebih ditekankan pada upaya untuk mengantisipasi ujian-ujian selajutnya, hal ini mengakibatkan banyak siswa yang hanya menghafal konsep, tanpa memahami konsep tersebut. Hal ini juga yang menyebabkan rendahnya komunikasi, sehingga para peserta didik tidak memahami rumus yang telah disampaikan. Penelitian ini bertujuan untuk mengetahui pengaruh penggunaan model pembelajaran kooperatif tipe Think Talk Write (TTW) berbantuan software Geogebra terhadap kemampuan komunikasi matematis siswa. Penelitian ini menggunakan pendekatan kuantitatif, dengan alat analisis spss. Hasil yang didapatkan bahwa model pembelajaran TTW berbantuan  geogebra dan model pembelajaran biasa diperoleh Fhitung = 10,665 > Ftabel = 3,140 dan dengan sig = 0.002. Karena taraf sig lebih kecil dari 0.05, sehingga Ho ditolak dan H1 diterima. Maka dapat disimpulkan terdapat pengaruh penggunaan model pembelajaran kooperatif tipe TTW berbantuan software Geogebra terhadap kemampuan komunikasi matematis siswa. Kata-kata kunci: Komunikasi, Pembelajaran Kooperatif Tipe TTW (Think, Talk and Write)
The Effect of Think-Talk-Write Cooperative Learning Assisted by GeoGebra Software on Students' Critical Thinking (Case Study of SMA AL-HIDAYAH Medan) Ahmad Rahmatika
Indonesian Journal of Education and Mathematical Science Vol 3, No 1 (2022)
Publisher : UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/ijems.v3i1.9877

Abstract

This study aimed to see or describe the effect of cooperative learning type think talk write assisted by GeoGebra software on students' critical thinking at SMA Al-Hidayah Medan. In the current learning period, there are still many students who use the memorization learning method, without knowing how the formula process actually works. Certainly, there is no student's ability to think critically to make them understand the formulas given by the teachers. This study used a quantitative approach, with the SPSS analysis tool and the ANOVA test. The results obtained that the group score of the GeoGebra-assisted TTW learning model and the ordinary learning model obtained a value of Fcount = 9.406 Ftable = 3.140 and with sig = 0.003. Because the sig level is less than 0.05, so Ho is rejected and H1 is accepted. So it can be concluded that there is an effect of using the TTW type cooperative learning model with the help of GeoGebra software on students' mathematical critical thinking skills.
Penerapan Software GeoGebra Dalam Kemampuan Komunikasi Matematis Mahasiswa Pada Mata Kuliah Trigonometri Ahmad Rahmatika; Ismail Hanif Batubara; Indah Purnama Sari
EDUTECH Vol 8, No 2 (2022): EduTech: Jurnal Ilmu Pendidikan dan Ilmu Sosial
Publisher : EduTech: Jurnal Ilmu Pendidikan dan Ilmu Sosial

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/edutech.v8i2.10581

Abstract

Abstrak.Penelitian ini bertujuan untuk mengetahui peningkatan kemampuan komunikasi matematis mahasiswa yang diajarkan dengan Software GeoGebra dan untuk mengetahui apakah terdapat interaksi antara media yang digunakan dengan hasil belajar khususnya yang berbaur tentang kemampuan komunikasi matematis mahasiswa pada mata kuliah trigonometri. Penelitian ini merupakan penelitian eksperimen. Dengan menggunakan dua kelas sebagai sampel penelitian. Satu kelas sebagai kelas eksperimen yang diberikan bantuan dengan Software GeoGebra dan satu kelas lagi sebagai kelas control tanpa bantuan Software Geogebra. Instrumen penelitian yang digunakan dalam penelitian ini adalah tes terhadap lima soal essay. Hasil penelitian menunjukkan bahwa Peningkatan hasil belajar kemampuan komunikasi matematis siswa yang diajarkan dengan Software Geogebra pada materi trigonometri lebih tinggi dibandingkan dengan hasil belajar tanpa menggunakan software Geogebra. Selain itu tidak terdapat interaksi antara hasil belajar dengan kemampuan awal matematis mahasiswa terhadap peningkatan kemampuan komunikasi matematik mahasiswa.
Self-efficacy, self-regulation, and math anxiety as predictors of elementary students’ mathematical problem-solving Arief Aulia Rahman; Nur ‘Afifah; Ahmad Rahmatika; Cesar Augusto Hernández Suárez
Jurnal Elemen Vol 11 No 4 (2025): October
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/jel.v11i4.30046

Abstract

Mathematical problem-solving is a core competency in primary education, yet how self-efficacy, self-regulation, and mathematics anxiety jointly influence performance on tasks of varying cognitive demand remains unclear. This study assessed 180 fifth-grade students from five public elementary schools in Medan City, Indonesia, using three instruments: a 10-item Mathematics Achievement Test (6 LOTS and 4 HOTS items), a 20-item Self-Efficacy and Self-Regulation Scale (10 items per subscale), and the 9-item Modified Abbreviated Math Anxiety Scale (mAMAS). Multiple linear regression showed that self-efficacy (βLOTS = 0.279; βHOTS = 0.261) and self-regulation (βLOTS = 0.214; βHOTS = 0.223) significantly predicted performance on both lower- and higher-order thinking tasks (p < 0.001), explaining 63.7% and 55.2% of the variance, respectively. Mathematics anxiety was not a significant predictor (p > 0.23). Findings suggest that fostering students’ confidence and metacognitive strategies is more effective than reducing anxiety for improving mathematical problem-solving across cognitive complexity levels. Educational interventions should prioritize strengthening self-efficacy and self-regulation to support robust mathematical development in upper primary classrooms.
Implementasi Algoritma Damerau-Levenshtein Untuk Pemeriksaan Dan Koreksi Kesalahan Ejaan Bahasia Indonesia Okvi Nugroho; Ahmad Rahmatika; Tri Andre Anu; Maulidya Rahmah
JURNAL ILMIAH SAINS TEKNOLOGI DAN INFORMASI Vol. 4 No. 2 (2026): Vol. 4 No. 2 (2026): April : Jurnal Ilmiah Sains Teknologi dan Informasi
Publisher : CV. ALIM'SPUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59024/jiti.v4i2.1943

Abstract

This study implements the Damerau-Levenshtein algorithm for an Indonesian spelling checking and correction system based on the distance editing approach. The main objective of this study is to develop a system capable of automatically detecting and correcting spelling errors at the character level through a matching process against the KBBI dictionary and the Indonesian corpus. The methods used include data collection, text pre-processing, system design, and implementation of the Damerau-Levenshtein algorithm which includes insertion, deletion, substitution, and transposition operations. Testing was conducted using 25 test data consisting of standard words and modified words for typographical errors. The results show that the system is able to measure all test data with an accuracy level of 100% on a limited dataset. In addition, the average Damerau-Levenshtein Distance value of 0.84 indicates that most errors are in the light category. Evaluation using a confusion matrix produces precision, recall, and F1-score values ​​of 100% each. These results indicate that the Damerau-Levenshtein algorithm is effective in handling character-based spelling errors. However, the system still has limitations in handling complex semantic contexts and language variations. Therefore, further research is recommended to integrate language model-based approaches to improve the system's accuracy and generalization on real-world data.
Co-Authors Cesar Augusto Hernández Suárez Indah Purnama Sari Ismail Hanif Batubara Maulidya Rahmah Okvi Nugroho Rahman, Arief Aulia Tri Andre Anu ‘Afifah, Nur