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Journal : International Journal of Education, Vocational and Social Science

Ethnomathematics Of The Jejahitan In Balinese Hindu Ritual Gede Ngurah Oka Diputra; I Gede Bagus Wisnu Bayu Temaja; Anak Agung Purwa Antara; I Wayan Sudiarta; I Wayan Nayun; I Made Yasna
International Journal of Education, Vocational and Social Science Vol. 2 No. 02 (2023): May, International Journal of Education, vocational and Social Science (IJEVSS
Publisher : Cita konsultindo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63922/ijevss.v2i02.309

Abstract

Ethnomathematics is a mathematical concept contained in a culture. The presence of mathematics with cultural nuances will make a significant contribution to learning mathematics. One of the ethnomathematics objects in Balinese Hindu culture is the jejahitan which is used as a medium for learning geometry. Jejahitan is a means of praying for traditional Balinese Hindu ceremonies made of young coconut leaves or janur, dried doub palm leaves, with various supporting materials such as flowers and fruit. The jejahitan used in ethnomathematics objects such as taledan, lamak, ituk-ituk, ceniga, tamiang, serembeng daksina, and sampian kapit kacang/canang kojong. At the same time, the applied mathematical concepts (geometry) are square, rectangle, triangle, circle, trapezoid, cylinder, cone, symmetry, width, circumference and volume. Ethnomathematics is very important; apart from being a student learning material, it also serves as a cultural preservation venue.
The Ethnomathematics of the Otonan in the Balinese Calendar System Gede Ngurah Oka Diputra; Anak Agung Purwa Antara; I Wayan Sudiarta; I Made Yasna; I Gede Bagus Wisnu Bayu Temaja
International Journal of Education, Vocational and Social Science Vol. 3 No. 02 (2024): May, International Journal of Education, Vocational and Social Science( IJVESS
Publisher : Cita konsultindo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63922/ijevss.v3i02.826

Abstract

Mathematics and culture are something that cannot be avoided in everyday life. Mathematics and culture are interrelated because mathematics is knowledge humans use to solve everyday problems. In contrast, culture is a complete and comprehensive unity that applies to society. However, sometimes mathematics is seen as outside of everyday life. Ethnomathematics is a mathematical concept that exists in a culture. The presence of mathematics with cultural nuances will make a significant contribution to mathematics learning. One of the ethnomathematics objects in Balinese Hindu culture is the Otonan. Otonan is a birth ceremony carried out by the Balinese people, based on Panca Wara, Sapta Wara, and Wuku in the Balinese calendar system. In determining Otonan, the least common multiple of the numbers 5, 7, 30 and repeated (cycles) are calculated so that the count for the Otonan ceremony is held every 210 days. Meanwhile, in determining Panca Wara, Sapta Wara and Wuku in Otonan, modulo (mod) numbers are used, namely modulo 5, modulo 7 and modulo 30. Ethnomathematics is very important; apart from being a learning material for students, it also functions as a means of cultural preservation.