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All Journal AFORE: Jurnal Pendidikan Matematika
Defi Susanti Duha
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Mathematics

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DEVELOPMENT OF THE OPPORTUNITY MODULE TO IMPROVE HIGH SCHOOL LEVEL UNDERSTANDING ABILITY OF MATHEMATICAL CONCEPTS Defi Yanti Hulu; Leni Marlina Laia; Defi Susanti Duha
Afore : Jurnal Pendidikan Matematika Vol 2 No 1 (2023): Afore : Jurnal Pendidikan Matematika
Publisher : Universitas Nias Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57094/afore.v2i1.764

Abstract

This research aims to improve the module which refer to the developing of understanding the mathematics concept. The teaching material of this lesson sets is opportunity material. The procedure of module development that used in this research is 4D development module (Define, Design, Develop, Disseminste). The instrument that used in this research to measure the validity of module, responsive students’ of question are to measure the practicality of module, and the sheet of pretest-posttest validity to measure the effectivity of mathematics module. Based on the validity test, the result of this research should that opportunity module was valid with the percentage of validity level was 96,83%. The result of practicality for the tes in limited group was 3.47 with the percentage 83,4% was categorized very practical. The result of the effectivevess test in limited group with the acquisition of values was 80% in effective categori, and the result of of test in controlled class with the axquisition values was 85,3% in effective category. The students’ ability in understanding the mathematics concept increased to 0,79 in bigh category. This result showed that the develompment of the module was valid, practical and effective and able to improve the stundents’ ability in understanding the mathematics concept. This module suggested to be used to improve the students’ ablitiy in understanding mathematics concept in opportunity material
DEVELOPMENT OF STUDENT WORK SHEET BASED ON CONTEXTUAL TEACHING AND LEARNING ON COLLECTED MATERIALS Defi Susanti Duha; Defi Yanti Hulu; Leni Marlina Laia
Afore : Jurnal Pendidikan Matematika Vol 2 No 1 (2023): Afore : Jurnal Pendidikan Matematika
Publisher : Universitas Nias Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The purpose of this research is to develop Student Worksheets based on Contextual Teaching and Learning on set materials that are valid, practical, and effective. The type of research used in this research is research and development or (R&D) with the ADDIE model (Analysis, Design, Development, Implementation, Evaluation). Data collection techniques used are validation sheets, student response questionnaires, and student learning outcomes tests. While the data analysis technique used is qualitative and quantitative data analysis. Based on research and discussion that the validation results of material experts were 81.66% with very feasible criteria, the validation results from media experts were 80% with very feasible criteria, and the validation results from linguists were 92% with very feasible criteria. The results of the practicality test from individual trial respondents were 70.33% with interesting and practical criteria, the results of small group trial respondents were 74.33% in the very interesting and very practical category, and the results of field trial respondents were 84.07% with the category very interesting and very practical. The effectiveness results obtained an average value of 80.69% with a very high category. Researchers hope that this LKPD can be used to improve students' abilities in set material.
ANALYSIS OF THE MATHEMATICAL COMMUNICATION ABILITY OF CLASS VII STUDENTS OF SMP NEGERI 1 ULUNOYO ON ASSOCIATION MATERIALS IN SAMBULU VILLAGE Leni Marlina Laia; Defi Susanti Duha; Defi Yanti Hulu
Afore : Jurnal Pendidikan Matematika Vol 2 No 1 (2023): Afore : Jurnal Pendidikan Matematika
Publisher : Universitas Nias Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57094/afore.v2i1.768

Abstract

This research is motivated by the importance of having mathematical communication skills in the set material. Mathematical communication skills are abilities that need to be developed in learning mathematics. The purpose of this study was to determine students' mathematical communication skills in learning mathematics for class VII SMP Negeri 1 Ulunoyo in Sambulu Village; This type of research is a qualitative research with a descriptive approach with the research population of all seventh grade students of SMP Negeri 1 Ulunoyo in Sambulu Village. The data were analyzed by the steps of data collection, data presentation and drawing conclusions. The research instrument used was a test of mathematical communication skills and an unstructured interview guide. The results showed that the mathematical communication skills of seventh grade junior high school students in Sambulu Village were still low where: 1) students were still unable to make mathematical models; 2) students have difficulty in interpreting the solution so that the problem solving process is wrong or incorrect; 3) students have difficulty in solving story problems. Through this research, the researcher suggests that students' mathematical communication skills should be further improved by practicing math problems related to mathematical communication.
Co-Authors Defi Yanti Hulu Leni Marlina Laia