Abstrak. Salah satu faktor penyebab pembelajaran matematika di SMPLB berjalan kurang maksimal adalah pengunaan bahan ajar. Bahan ajar yang digunakan oleh guru dalam pembelajaran pada anak-anak tunarungu di SMPLB di Kota Kupang masih menggunakan bahan ajar yang sama dengan siswa normal. maka perlu adanya bahan ajar yang sesuai dengan kebutuhan dan karakteristik mereka. Penelitian ini bertujuan untuk menghasilkan sebuah buku matematika khusus untuk anak-anak tunarungu, yang berbasis pada visualisasi dan realistik. Metode yang digunakan adalah metode pengembangan dengan model 4D rancangan Thaiagaradjan dimana terdiri dari empat tahap yaitu, pendefinisian (define), perancangan (design), pengembangan (develop), dan penyebaran.Instrumen yang dikembangkan dalam penelitian ini terdiri atas enam macam, yakni (1) lembar validasi bahan ajar, (2) lembar keterbacaan bahan ajar, (3) lembar observasi aktivitas guru, (4) lembar observasi aktivitas anak-anak tunarungu, (5) angket respon anak-anak tunarungu dan (6) lembar tes tulis. Indicator penilaian dari penelitian pengembangan ini meliputi valid, praktis dan efektif. Hasil analisis menunjukkan bahan ajar yang dikembangkan memenuhi kriteria valid, praktis dan efektif, sehingga bahan ajar tersebut berkulaitas baik dan dapat digunakan dalam pembelajaran matematika bagi siswa SMPLB Kelas VII.
Students need teachers with a deep understanding of mathematical concepts to improve their mathematical knowledge and achievement. The observation results of several elementary school teachers showed that they still have a lack of understanding of the geometry concepts. This research is an exploratory study with a qualitative approach that aims to describe the performance of elementary school teachers in understanding the concepts of triangles and squares. The participants in this study were elementary school teachers across Soe City District. A description test deals with the geometry concept of two-dimensional shapes that were implemented to determine the most appropriate teachers to participate in the study. Thirty-three teachers were then selected based on this preliminary test results. In-depth interviews were also conducted with the participants. The data analysis showed that the participants had a lack of understanding of the concept of two-dimensional shapes and necessary arithmetic skills. Moreover, the data suggested that the participants held various perceptions regarding their understanding of certain concepts based on their experience in teaching the mathematical concept. Based on these results, some programs are recommended to improve professionalism and pedagogical competencies, such as a refresher training program for basic mathematical material and training in teaching aids used. These programs are expected to help prepare elementary school teachers in teaching mathematics.
Props are aids used to ease students understand well the mathematical concepts explained by the teacher. The elementary school level requires real concepts so that in concretizing abstract concepts the teacher should be able to use props to explain the concept. The purposes of the community service are teachers are able to produce props in learning activities and can instill basic concepts so that they are able to solve commonly faced problems in learning activities. The method used is a practical method. This community service was carried out at SD GMIT Koro’oto, Kupang Regency, East Nusa Tenggara. Based on the evaluation result of the community service, it shows that teachers participated actively in the activity shown by their responses and interactions. In addition, the teachers felt the importance of this training because they gained a lot of new knowledge in solving every problem in learning activities and were able to produce props that could help explain basic concepts to students.
The purpose of this research is to analyze in depth the mathematical values contained in the buna woven fabric. The method used is a qualitative method with an ethnographic design because it will explain one of the cultural artifacts of the people of NTT, in this case the buna woven fabric. The results obtained are the motifs on the buna woven cloth that analyzed containing geometric and arithmetic concepts. From the analyzed quadrilateral characteristics, the quadrilateral found in the buna woven fabric is a rhombus. In addition, values or mathematical concepts on woven fabrics that can be taught to junior high school students include finding the formula for the area and perimeter of a rhombus using a triangle approach; calculate the area and circumference of a rhombus; arithmetic and geometric sequences and calculating the number of rhombic models on buna woven fabrics. Abstrak Tujuan dari penelitian ini adalah untuk menganalisis secara mendalam nilai-nilai matematika yang terdapat pada kain tenun buna. Metode yang digunakan adalah metode kualitatif dengan desain etnografi, karena akan menjelaskan mengenai salah satu artefak budaya masyarakat NTT, dalam hal ini kain tenun buna. Hasil yang diperoleh adalah motif pada kain tenun buna yang dianalisis memuat konsep-konsep geometri dan aritmatika. Dari sifatsifat segiempat yang dianalisis maka dapat diketahui bahwa bangun datar segiempat yang terdapat pada kain tenun buna adalah belah ketupat. Selain itu nilai-nilai atau konsepkonsep matematika pada kain tenun buna yang dapat diajarkan pada siswa SMP antara lain: menemukan rumus luas dan keliling belah ketupat menggunakan pendekatan segitiga; menghitung luas dan keliling belah ketupat; barisan aritmatika dan geometri serta menghitung banyaknya model belah ketupat pada kain tenun buna
Penelitian ini merupakan penelitian kualitatif yang bertujuan untuk memperoleh gambaran pemahaman konsep matematik siswa SMA Kristen 1 Kupang dalam menyelesaikan tes pemecahan masalah pada materi program linear. Subyek dalam penelitian ini adalah tiga siswa kelas XI yang memiliki hasil Penilaian Tengah Semester (PTS) tinggi, sedang, dan rendah. Pemilihan subyek juga berdasarkan hasil diskusi antara peneliti dan guru mata pelajaran matematika. Data yang dikumpulkan berupa data hasil tes pemecahan masalah dan hasil wawancara berdasarkan indikator pemahaman konsep. Analisis data mencakup reduksi data, penyajian data, dan penarikan kesimpulan. Pengecekkan keabsahaan data menggunakan triangulasi waktu. Hasil analisis diperoleh kesimpulan sebagai berikut; (1) Siswa dengan hasil PTS tinggi mampu menyelesaikan soal yang diberikan dan memenuhi ketiga indikator pemahaman konsep yaitu indikator penerjemahan, penafsiran, dan ekstrapolasi. (2) Siswa dengan hasil PTS sedang hanya memenuhi satu indikator pemahaman konsep yaitu indikator ekstrapolasi. (3) dan siswa dengan hasil PTS rendah tidak memenuhi ketiga indikator pemahaman konsep.
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