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Santika, Indah Feliya
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Mathematics

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PENGARUH PENERAPAN TEACHING AT THE RIGHT LEVEL (TARL) TERHADAP KEMAMPUAN SPASIAL MATEMATIS SISWA PADA MATERI TRANSFORMASI GEOMETRI Anasari, Pebi Pitri; Wahyudin, Wahyudin; Santika, Indah Feliya
PHI: Jurnal Pendidikan Matematika Vol 9, No 2 (2025): EDISI OKTOBER, 2025
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/phi.v9i2.575

Abstract

Kemampuan spasial matematis merupakan salah satu komponen penting dalam memahami konsep geometri, khususnya pada materi transformasi geometri. Namun, hasil belajar siswa di bidang ini masih tergolong rendah karena proses pembelajaran yang belum sepenuhnya memperhatikan perbedaan kemampuan awal siswa. Penelitian ini bertujuan untuk menganalisis pengaruh penerapan pendekatan Teaching at the Right Level (TaRL) terhadap kemampuan spasial matematis siswa SMP dibandingkan dengan pendekatan Saintifik. Metode yang digunakan adalah quasi-experimental dengan desain pretest-posttest control group. Data dikumpulkan melalui tes kemampuan spasial matematis dan dianalisis menggunakan uji independent samples t-test dengan bantuan SPSS. Hasil penelitian menunjukkan bahwa rata-rata skor posttest siswa yang belajar dengan pendekatan TaRL lebih tinggi dibandingkan dengan siswa yang belajar menggunakan pendekatan Saintifik (M = 73,00; SD = 15,916 vs. M = 54,39; SD = 17,838). Hasil uji t menunjukkan perbedaan yang signifikan antara kedua kelompok, yang berarti pendekatan TaRL efektif dalam meningkatkan kemampuan spasial matematis siswa. Temuan ini memperkuat pandangan bahwa pembelajaran yang disesuaikan dengan tingkat kemampuan aktual siswa dapat membantu mengoptimalkan proses konstruksi pengetahuan matematis.
PENGEMBANGAN E-LKPD BERBASIS PROBLEM BASED LEARNING BERBANTUAN GEOGEBRA MATERI BANGUN RUANG SISI DATAR Santika, Indah Feliya; Izzati, Nur; Siregar, Nur Asma Riani
PHI: Jurnal Pendidikan Matematika Vol 10, No 1 (2026): EDISI APRIL, 2026
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/phi.v10i1.644

Abstract

This study aimed to create digital teaching materials that help students understand abstract geometric ideas and promote active engagement in mathematics learning. The objective was to develop an electronic student worksheet (E-LKPD) using the problem-based learning (PBL) model and supported by Geogebra, for eighth-grade students studying three-dimensional geometry topics. The research employed the Research and Development (R&D) 4D model by Thiagarajan, encompassing the Define, Design, Development, and Disseminate stages. Data were collected through questionnaires and tests, including expert validation sheets, student response questionnaires, and learning outcome tests. The data were analysed using both qualitative and quantitative techniques. The results indicated that the developed E-LKPD met validity criteria, with average material validity of 89.13%, language validity of 80.66%, and media validity of 87.89%. The practicality level achieved an average score of 81.97%, indicating a highly practical level. revealed that the use of the E-LKPD significantly improved students learning outcomes and increased their participation These findings suggest that the PBL-based E-LKPD supported by Geogebra is suitable for use as an innovative teaching material to enhance meaningful mathematics learning.
Co-Authors Anasari, Pebi Pitri Siregar, Nur Asma Riani Sukatin, Sukatin Wahyudin Wahyudin