Penelitian ini bertujuan untuk mengembangkan media travel game sehingga diketahui: (1) kelayakan media travel game untuk pembelajaran matematika kelas V SD materi perkalian dan pembagian bilangan pecahan, (2) keefektivan penerapan media travel game untuk pembelajaran matematika kelas V SD materi perkalian dan pembagian bilangan pecahan. Penelitian ini merupakan penelitian pengembangan Research and Development (R&D) adaptasi Dick and Carey. Subjek pada penelitian ini adalah siswa kelas V SD N Lempuyangan I Yogyakarta. Pengumpulan data dilakukan dengan lembar validasi ahli, lembar komentar siswa, lembar observasi guru, dan tes. Data dari instrumen dianalisis menggunakan analisis deskriptif skala lima dan analisis Uji T. Hasil penelitian menunjukkan bahwa media travel game layak digunakan untuk pembelajaran matematika kelas V SD materi perkalian dan pembagian bilangan pecahan. Hasil kelayakan media travel game oleh ahli materi, media dan praktisi mendapatkan penilaian “baik”. Hasil kelayakan media travel game oleh siswa dalam tahap one to one evaluation mendapatkan penilaian “baik”, tahap small group evaluation mendapatkan penilaian “baik”, dan tahap field evaluation mendapatkan penilaian “baik sekali”. Media travel game efektif digunakan untuk pembelajaran matematika kelas V SD materi perkalian dan pembagian bilangan pecahan dengan perolehan hasil t hitung = -9,764. Kata kunci: pengembangan, media travel game, matematika

Music correlates to mathematics in the form of pattern concepts, formulas, and calculations that can be used as variations of ethnomathematics-based learning. One of the mathematics learning’s goals, according to the National Council of Teachers of Mathematics (NCTM), is a cultural purpose. This research aims to describe the results of mathematical element analysis in Surabaya regional songs. The research method used was qualitatively descriptive. The data sources used in this study were researchers, literatures, and field practitioners. Data collection techniques used were interviews and documentation studies. The documentation study was carried out by making a literature assessment corresponding to the required data. The data analysis technique used was Miles and Huberman’s models encompassing data reduction, data presentation, and conclusion drawing stages. The results of study showed that there is a mathematical element in the regional song from Surabaya. The mathematical elements found in the analysis of block notation scores and number notations are summation of same-number fractions, summation of different fractions, multiplication of fractions, data processing in modes form, as well as data presentation in the form of tables, bar diagrams, and line charts. In addition to finding the mathematical elements in Surabaya regional songs, this study also proves that there is a correlation between music and mathematics.

This paper discusses the adoption of several phonological processes in Indonesian words into Ciacia in Buton, Southeast Sulawesi province. Ciacia language which is one of the languages with the most speakers in mainland Buton Kingdom in its development are adopting some Indonesian words. Adoption of words in Indonesian as compared to most other areas of the language word. This is due to ethnic mixing Ciacia just used both languages in daily life. In adopting Indonesian words into Ciacia many who have phonological processes. Phonological processes are most commonly found is the addition and removal of noise at the end of the word. The word has been adopted into the language Ciacia always be words with open syllables. This is caused by the language Ciacia unknown words with closed syllables.

This paper aims to portray elementary teachers’ perception of implementing the Realistic Mathematics Education (RME) approach in their best practice after training in a series of RME workshops. The perceptions captured in the study include (1) teachers’ confidence in understanding RME and its implementation in their best practices; (2) RME criteria, which teachers found most challenging during the planning and the implementation. The subject of this study is 296 elementary teachers who have attended the training. The workshop series provided RME materials, simulation during the workshop, implementation in teachers’ best practices, and the workshop to discuss their experience. There are two findings in this study. Firstly, most teachers have a better understanding of RME characteristics. However, most teacher believe that the RME approach can be applied most mathematical topics. They felt confident in implementing the RME approach in their best practices. Secondly, teachers found that the most challenging when planned the RME lesson was finding suitable media related to mathematics topics. Moreover, during the implementation, teachers found it most challenging to lead students to formal mathematics. These results suggest that the most impactful workshop is better, followed by best practices and participants’ reflection afterward.