Articles

Development of Teaching Module Using Probing Prompting Based on Ethnomathematics to Improve Students’ Mathematical Communication Ability

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This research aims to develop a teaching module using a probing-prompting learning model based on ethnomathematics on the topic of flat-sided solid geometry to improve the mathematical communication ability of junior high school (SMP) students, ensuring it is valid, practical, and effective. The study employed the 4D development model (Define, Design, Develop, Disseminate), followed by a quasi-experimental study using a non-equivalent control group design. The subjects of this research were ninth-grade students at SMP Negeri 1 Sukosari, Bondowoso. The module validation results showed a very valid criterion with an average validity percentage of 92.5%7. The practicality test results obtained a value of 91.3% in the very practical category. The effectiveness test showed a significant difference in mathematical communication ability between the experimental and control classes with a significant (p < 0,05) value. Thus, the teaching module using probing-prompting based on ethnomathematics can be used to improve the mathematical communication ability of junior high school students because it is valid, practical, and effective10. Based on these results, teachers are expected to implement the probing prompting learning module by creating question guides that can enhance students’ mathematical communication ability and can be adapted to local cultural contexts as an alternative teaching material.

The Development of Ethnomathematics-Based Learning Devices of Sulur Godong Batik Using Digital Manipulatives on Geometry Transformation to Improve Students Creative Thinking Abilities

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The research conducted aims to create learning devices that can be declared valid, practical, and effective, especially on the subject of Geometric Transformation. The development of this learning device is carried out with the aim of improving students’ creative thinking skills. This research is a type of research and development with the 4-D Thiagarajan development model. The stages of 4-D Thiagarajan include define, design, develop, and disseminate. Data collection is carried out using observation, test, and questionnaire techniques. The results of the Ethnomathematics-based development research using digital manipulatives are classified into valid, practical, and effective. The level of validity can be seen from the validity value of each teaching module of 3.78, LKPD of 3.87, and test of 3.92 which are included in the valid category. The practicality value is obtained from the results of observations of the implementation of learning devices and the results of observations of student activities of 92.25% and 93.08%, respectively. The effectiveness value is seen from the learning outcome data obtained 83.0% completed classically with the category of very creative and creative thinking and the student response questionnaire has a positive value of 88.2%. Suggestions for teachers are expected to use learning devices more often because they can train students’ creative thinking skills and can be used as a guideline in a more varied and innovative learning process. Not only that, other researchers can reach wider research subjects and different materials in the development of further learning devices.

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.