Articles

Development of Ethnomatematics-Based E-Book Teaching Materials to Train Numeracy Skills in Geometry Materials in Elementary Schools

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This study aims to develop ethnomathematics-based E-Book teaching materials to train students’ numeracy skills and to determine student learning activities when using E-Book teaching materials. This research is a type of Research and Development (R&D) research. The development model used in this study is the ASSURE development model. This research will later develop valid, practical and effective ethnomathematics-based E-Book teaching materials as well as analyze student learning activities. Data collection instruments in this study used validation sheets, questionnaires, tests and observation sheets. The data analysis technique used is the analysis of validity, practicality, effectiveness and analysis of student learning activities. The results showed that the validity of the media and material validity of E-Book teaching materials based on ethnomathematics obtained results of 93.7% and 89.2% with the “Very Valid” criteria. The practicality of ethnomathematics-based E-Book teaching materials obtained results of 94.2% from teacher responses and 82% from student responses so that ethnomathematics-based E-Book teaching materials can be said to be “Very Practical”. Furthermore, the effectiveness of E-Book teaching materials based on ethnomathematics obtained an average N-Gain result of 42.50% with the “Medium” effectiveness criterion. Meanwhile for the results of student learning activities, the results obtained in the experimental group were greater than in the control group, namely 87% with the criteria of “Very Active”.

The Framework of Ethnomathematics Learning Activities Based on Majapahit Culture with STEAM Approach: Utilizing Used Cardboard for Miniature Building Media Development in Enhancing the Students’ Creative Thinking Abilities

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Creative thinking is one of the 21st-century skills that can be developed through learning mathematics. Mathematics learning involves the culture students already know to facilitate students’ understanding. Mojokerto City carries the slogan Spirit of Majapahit, giving the city’s layout a nuance. The concept of two-dimensional and three-dimensional shapes with a Majapahit nuance can be used as a source of ethnomathematics learning to enhance creative thinking skills. Teaching about two-dimensional shapes can be used as teaching material to improve creative thinking skills. Creative thinking skills are an individual’s ability to find new ways, strategies, ideas, or concepts about how to obtain a solution to a problem. Students’ thinking skills may need to be higher. One reason is that the teaching methods used so far have yet to highlight the concept of two-dimensional shapes related to ethnomathematics. Therefore, this study will apply an ethnomathematics-based learning activity framework based on the Majapahit culture with a STEAM approach by using cardboard to make miniature buildings to improve students’ creative thinking skills. The most suitable approach is STEAM since it integrates five disciplines to enhance further creative thinking skills in solving problems related to two-dimensional and spatial constructions.

Ethnomathematics Exploration in Coffee Planting Activities at Durjo Jember Plantation

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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.