Abstract :

Ethnomathematics refers to the apllication of mathematics in social and cultural life. This study aims to explore and describe ethnomathematics in coffee planting activities carried out by coffee farmers in Durjo Plantation, Jember which involves mathematical concepts. This type of research is a qualitative research with an ethnographic approach. The data collection method uses observation, documentation, and conducts in-depth interviews with 3 farmers who will be labeled with S1, S2, and S3. The results of data collection were carried out and analyzed descriptively. This research found that in the activities of coffee farmers involving mathematics, there are mathematical elements including the concepts of flat building, building space, revival, concongruence, translation, reflection, and rotation.

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Keywords :

Coffee Plantation, Ethnomathematics, Geometry, Mathematics Concepts.

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