The mathematical aspects of the Jambi traditional wedding ceremony are related to the process of assimilation and accommodation (constructivism theory) as well as ZPD and scaffolding (Vygotsky's theory of cognitivism). This study aims to examine the mathematical material contained in the Jambi traditional wedding ceremony so that it becomes knowledge that can be applied in schools. The research design used is an ethnographic qualitative research design. Ethnographic qualitative research researchers will obtain data through interviews, observation, and documentation. The sample selection from this research used purposive sampling technique. Based on these criteria, the sample of this study was 6 couples who married using Jambi traditional wedding ceremonies in July and August 2021. The instruments in this study were interviews, observations and supported by documentation. The data that has been obtained through interviews, observations, and documentation are then analyzed using analytical techniques using the Miles & Huberman based on a predetermined code in the form of a color code that is done manually. The results showed that the mathematical aspects contained in the Jambi traditional wedding ceremony consisted of aspects of counting, measuring, placing, designing, playing and explaining.