[justify] Kadir (in Prastiyan, 2017) said that like cities in general, Jepara has the characteristics of a distinctive name as the identity of a city that makes Jepara City famous. Hearing the word "Jepara" certainly cannot be separated from the meaning of the City of Jepara as the City of Carving, so that the words Jepara carving have become a characteristic feature. People in this area have long been known to have talent in the field of carving and have made their skills a source of livelihood. This is also what the district government and stakeholders have launched the branding of the city of Jepara as the Wood Carving Center (Kurniawan & Wiyoto, 2018). This factor often invites immigrants from various regions and even countries to visit Jepara to get a direct picture of the ability of the people of Jepara in carvings.[/justify]

[justify] Mathematical ideas are an abstract form of everyday human life activities that should be easy to learn and understand. However, it is still found in some students who still have difficulty learning mathematics. The reason is that students encounter many problems in everyday life that are different in learning mathematics taught in schools (Andriyani, 2017). So we need an approach in learning to connect mathematics in schools with mathematics that exist in everyday life or culture.[br] An approach that can be used to bridge the relationship between mathematics and culture is ethnomatematics (Wahyu et al, 2018). Through the application of ethnomathematics in education, especially mathematics learning, it is hoped that later students will be able to better understand mathematics as well as better understand their culture, and educators will find it easier to instill cultural values themselves in students.[br] Wahyu et al (2018) said that "to realize meaningful mathematics learning, a learning medium that is close to students is needed". Learning media that are close to students and have mathematical elements, one of which is Jepara Carving. Thus students are more interested in participating in mathematics learning and are more motivated to know and love the culture of the city of Jepara. In addition, given the diversity of Indonesian culture and the lack of learning resources for mathematics based on local cultures, it is very important to use local culture as a source of contextual learning.[br] Education and culture have very important roles in cultivating and developing the noble values of our nation, which have an impact on character building based on noble cultural values (Wahyuni et al., 2013). Ethnomathematic-based learning, especially in Jepara carving which depicts the characteristics of Jepara itself, apart from being able to learn mathematics contextually, can motivate student learning to be active in class, students can also understand Jepara culture in the field of carving and can foster character values.[/justify]

[justify] The concept of transformation is one of the techniques / methods used by carvers in making a pattern that has the same pattern on each side, it's just that there are differences in the process of laying out the pattern. The concept of geometric transformation includes translation of reflection, translation, rotation and dilation. By linking these mathematical concepts to the surrounding culture, students are expected to be able to understand more about the concept of transformation (Kholil Bisyri, 2020).[/justify]