Dwi Octa Marcellita Girsang
Universitas Negeri Medan

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Analysis of Mathematics Percentage Calculation Strategies Quickly and Accurately Based on a Literature Review Adi Sinaga; Dinda Alexa Nabila Utomo; Dwi Octa Marcellita Girsang
Journal of Artificial Intelligence and Engineering Applications (JAIEA) Vol. 5 No. 3 (2026): June 2026
Publisher : Yayasan Kita Menulis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59934/jaiea.v5i3.2265

Abstract

Percentages are one of the important concepts in mathematics that are widely used in various contexts of daily life such as economics, commerce, and decision-making. However, various studies show that the concept of percentage is still a material that is quite difficult for students and prospective mathematics teachers to understand. These difficulties are generally related to the understanding of the basic concept of percentage, the use of the percent symbol (%), and the ability to relate the percentage value to the reference value in a problem. This study aims to analyze various percentage calculation strategies that can be carried out quickly and accurately based on the results of previous research. The method used in this study is a literature study by reviewing various scientific articles from SINTA-accredited national journals and international journals that are relevant to the topic of percentages in mathematics learning. Data is collected through documentation techniques by examining and analyzing research findings related to the percentage calculation strategy. The results of the study show that the use of mental calculation strategies, understanding the basic concept of percentages, and the use of visual models can help improve students' ability to calculate percentages more effectively and efficiently. Therefore, the right calculation strategy is essential to support the understanding of the concept of percentages in mathematics learning.
INTERACTIVE BOARDS WITH DEEP LEARNING TO IMPROVE STUDENTS’ UNDERSTANDING OF COMPARISON Budi Halomoan Siregar; Dwi Octa Marcellita Girsang; Maria Panjaitan; Risna Apriani Tamba; Ronauli Simamora
SCIENCE : Jurnal Inovasi Pendidikan Matematika dan IPA Vol. 6 No. 1 (2026)
Publisher : Pusat Pengembangan Pendidikan dan Penelitian Indonesia (P4I)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51878/science.v6i1.8502

Abstract

Penelitian ini bertujuan untuk menganalisis pengaruh penerapan pembelajaran mendalam (deep learning) yang terintegrasi dengan penggunaan papan perbandingan interaktif terhadap pemahaman siswa pada materi perbandingan di SMP Negeri 11 Medan. Penelitian ini menggunakan metode pre-eksperimen dengan desain one group pretest-posttest. Subjek penelitian terdiri atas 30 siswa kelas VII. Instrumen penelitian berupa tes pemahaman konsep perbandingan yang diberikan sebelum dan sesudah perlakuan. Hasil penelitian menunjukkan adanya peningkatan yang signifikan pada pemahaman siswa setelah menggunakan pembelajaran berbasis papan perbandingan interaktif. Peningkatan tersebut terlihat dari hasil nilai rata-rata pretest siswa sebesar 26,7%, sedangkan nilai rata-rata posttest meningkat menjadi 92,5%. Uji paired sample t-test menunjukkan nilai thitung = 12,70 lebih besar daripada ttabel = 2,045, sehingga H₀ ditolak dan H₁ diterima. Hal ini menunjukkan adanya perbedaan yang signifikan antara hasil pretest dan posttest siswa. Peningkatan pemahaman siswa juga didukung oleh nilai N-Gain sebesar 0,89 yang termasuk dalam kategori tinggi, yang menunjukkan bahwa pembelajaran yang diterapkan sangat efektif. Dengan demikian, pembelajaran mendalam berbasis papan perbandingan interaktif terbukti efektif dalam meningkatkan pemahaman konsep perbandingan siswa. ABSTRACT This study aims to analyze the effect of applying deep learning integrated with the use of interactive comparison boards on students' understanding of comparison material at SMP Negeri 11 Medan. This study used a pre-experimental method with a one-group pretest-posttest design. The research subjects consisted of 30 seventh-grade students. The research instrument was a comparison concept comprehension test administered before and after the treatment. The results showed a significant increase in students' understanding after using interactive comparison board-based learning. This improvement was evident from the students' pretest average score of 26.7%, while the posttest average score increased to 92.5%. The paired sample t-test showed that the tcount = 12.70 was greater than the ttable = 2.045, so H₀ was rejected and H₁ was accepted. This indicates a significant difference between the students' pretest and posttest results. The improvement in students' understanding is also supported by an N-Gain value of 0.89, which is in the high category, indicating that the learning method applied is very effective. Thus, deep learning based on interactive comparison boards has been proven to be effective in improving students' understanding of comparison concepts.