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All Journal JPMI (Jurnal Pembelajaran Matematika Inovatif) Jurnal Didaktik Matematika
Lestari Roswahyuliani
IKIP Siliwangi
Education Mathematics

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PENERAPAN MEDIA GEOGEBRA UNTUK MENINGKATKAN KEMAMPUAN PEMAHAMAN MATEMATIS SIWA SMA Lestari Roswahyuliani; Tina Rosyana; Wahyu Setiawan; Gida Kadarisma
JPMI (Jurnal Pembelajaran Matematika Inovatif) Vol 5, No 3 (2022): JPMI
Publisher : IKIP Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/jpmi.v5i3.10252

Abstract

Learning mathematics using the concept of mathematical understanding is needed to solve a mathematical problem. This research is a classroom action research (CAR) which aims to analyze the ability to understand students’ mathematical concepts in SPtLDV material with the help of geogebra media. The subjects of this study were 20 students of class X Senior High School 1 Cisarua with low, medium, and high categories. The instruments used are the initial tests (before the action); the first and second cycle test (after giving the action); interview; observation sheets for teachers and students regarding the research conducted. The resultas obtained in the pre-cycle are 30%, in the first cycle there are 45%, and in the second cycle there are 90% who have the ability to understand students’ understanding of the SPtLDV material. Based on the research that has been done, it can be concluded that the students’ mathematical understanding ability on SPtLDV material assisted by geogebra media has increased.
Development of E-Worksheets Using Contextual Teaching and Learning to Increase Students' Critical Mathematical Thinking Lestari Roswahyuliani; Radifan Irsaly Ruchiyat; Wawat Mugiawati; Wahyu Hidayat
Didaktik Matematika Vol 11, No 1 (2024): April 2024
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jdm.v11i1.33116

Abstract

This study aims to develop e-worksheets using contextual teaching and learning to improve students' critical mathematical thinking. The method used in developing e-worksheets was design research. The research data were obtained through validation questionnaires, student responses, and critical mathematical thinking skills tests. The research subjects used were 36 Year 10 students in one of the public high schools in West Bandung Regency. Based on the results of data analysis, the validation results obtained were 3.6 with valid criteria, and student responses about practicality obtained 'very practical' criteria with an average percentage of 86%. The product's effectiveness is said to be 'Very Good' with an average score of 80.75 from the students' post-test. The increased students' critical thinking resulted in the Moderate criteria with an N-Gain of 0.66. E-worksheets with contextual teaching and learning are feasible and can improve students' critical mathematical thinking skills on the comparison of trigonometric function.
Co-Authors Gida Kadarisma Radifan Irsaly Ruchiyat Tina Rosyana Wahyu Hidayat Wahyu Setiawan Wawat Mugiawati