PENGARUH MEDIA KOIN DALAM MENINGKATKAN KEMAMPUAN MATEMATIKA (PENJUMLAHAN) BAGI ANAK TUNAGRAHITA RINGAN KELAS 3 SDLB DI SKh PELANGI ANAKKU KOTA TANGERANG
Suryati, Erna (2026) PENGARUH MEDIA KOIN DALAM MENINGKATKAN KEMAMPUAN MATEMATIKA (PENJUMLAHAN) BAGI ANAK TUNAGRAHITA RINGAN KELAS 3 SDLB DI SKh PELANGI ANAKKU KOTA TANGERANG. S1 thesis, Universitas Islam Nusantara.
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Abstract
ABSTRAK Kemampuan penjumlahan merupakan salah satu keterampilan dasar matematika yang perlu dikuasai oleh peserta didik, termasuk peserta didik dengan disabilitas intelektual ringan. Namun, keterbatasan dalam memahami konsep abstrak menyebabkan peserta didik sering mengalami kesulitan dalam mempelajari operasi penjumlahan. Penelitian ini bertujuan untuk mengetahui pengaruh penggunaan media koin terhadap peningkatan kemampuan penjumlahan pada satu orang peserta didik kelas III SDLB dengan disabilitas intelektual ringan di SKh Pelangi Anakku Kota Tangerang. Penelitian menggunakan pendekatan kuantitatif dengan metode Single Subject Research (SSR) menggunakan desain A₁–B–A₂, yang terdiri atas lima sesi baseline (A₁), lima sesi intervensi (B), dan lima sesi baseline kedua (A₂). Target perilaku (target behavior) dalam penelitian ini adalah kemampuan peserta didik menyelesaikan lima soal penjumlahan bilangan cacah rentang 1–15 tanpa menyimpan pada setiap sesi. Pengumpulan data dilakukan melalui tes, observasi, dan dokumentasi, sedangkan analisis data menggunakan analisis visual dalam kondisi (within-condition analysis) dan analisis visual antar kondisi (between-condition analysis) yang meliputi arah kecenderungan, stabilitas, perubahan level, dan persentase data yang tumpang tindih (overlap). Hasil penelitian menunjukkan bahwa penggunaan media koin memberikan pengaruh positif terhadap kemampuan penjumlahan peserta didik. Hal tersebut ditunjukkan oleh peningkatan nilai rata-rata hasil tes yang telah dikonversi, yaitu dari 44 pada fase baseline (A₁) menjadi 76 pada fase intervensi (B), kemudian meningkat menjadi 80 pada fase baseline kedua (A₂), dengan persentase peningkatan sebesar 81,8%. Hasil analisis visual juga menunjukkan adanya kecenderungan peningkatan kemampuan penjumlahan pada setiap fase penelitian, sehingga media koin terbukti efektif sebagai media pembelajaran konkret dalam meningkatkan kemampuan penjumlahan pada peserta didik dengan disabilitas intelektual ringan. Kata kunci: media koin, kema mpuan penjumlahan, disabilitas intelektual ringan, Single Subject Research (SSR), media pembelajaran konkret. ABSTRACT Addition is one of the fundamental mathematical skills that should be mastered by students, including students with mild intellectual disability. However, limitations in abstract thinking often make it difficult for these students to understand addition concepts. This study aimed to examine the effect of coin media on improving the addition skills of one third-grade student with mild intellectual disability at SKh Pelangi Anakku, Tangerang City. The study employed a quantitative approach using a Single Subject Research (SSR) design with an A₁–B–A₂ sequence, consisting of five baseline (A₁) sessions, five intervention (B) sessions, and five maintenance (A₂) sessions. The target behavior was the student's ability to solve five addition problems involving whole numbers from 1 to 15 without carrying in each session. Data were collected through performance tests, observation, and documentation, and analyzed using visual analysis within and across conditions, including trend, stability, level change, and data overlap. The findings indicated that the use of coin media improved the student's addition skills, as reflected by an increase in the mean score from 44 during baseline (A₁) to 76 during the intervention phase and 80 during the maintenance phase (A₂), accompanied by an improvement percentage of 81.8%. The visual analysis also demonstrated a positive change in performance across phases, indicating that coin media effectively facilitated the student's acquisition and maintenance of basic addition skills. Therefore, coin media can be considered an effective concrete instructional medium for improving basic addition skills in students with mild intellectual disability. Keywords: coin media; addition skills; mild intellectual disability; Single Subject Research; concrete instructional media.
| Item Type: | Thesis (S1) |
|---|---|
| Subjects: | L Education > L Education (General) |
| Divisions: | Fakultas Keguruan dan Ilmu Pendidikan > Pendidikan Luar Biasa (S1) |
| Depositing User: | Repo PLB Uninus |
| Date Deposited: | 30 Oct 2026 02:38 |
| Last Modified: | 30 Oct 2026 02:38 |
| URI: | http://repository.uninus.ac.id/id/eprint/1585 |
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