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Ronny, Renata Teddy
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Education Mathematics Other

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Analysis of Vocational School Student’s Mathematical Reasoning in Quadratic Equation Ronny, Renata Teddy; Putra, Harry Dwi; Hendriana, Heris
(JIML) JOURNAL OF INNOVATIVE MATHEMATICS LEARNING Vol. 7 No. 2 (2024): VOLUME 7 NUMBER 2, JUNE 2024
Publisher : IKIP Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/jiml.v7i2.19157

Abstract

Essay test questions in mathematics learning at Vocational High Schools show that most students have difficulty answering questions about quadratic equations, this is the basis of the research. The reason this problem can occur is because students are not careful in interpreting questions so students cannot master inductive indicators. The purpose of this study is to find out more about students' mistakes when answering questions about mathematics through analysis and description of some of the students' mistakes in answering questions about quadratic equations, therefore this study uses a descriptive method with a qualitative approach. The research subjects were students of class XI Software Engineering at a Vocational High School in Kabupaten Bandung Barat with a total of 15 students. The stages in this research are planning, implementation, and reporting. Student test results as many as three questions are used to collect data. The analysis technique used is data reduction, by presenting the data then conclusions are drawn. The results and discussion of this study showed that students made mistakes in answering quadratic equation questions. The accuracy of students towards questions number 1 and number 3 is still low, so it is necessary to do regular exercises. Students' mathematical reasoning abilities need to be honed again. It can be seen from the results of the answers to question 2 that students have not been able to interpret the questions so that inductive indicators on students' mathematical reasoning abilities have not been fulfilled.
The Development of Learning Media on Building Three-Dimensional Shape using E-Comic Fitriani, Nelly; Ronny, Renata Teddy
(JIML) JOURNAL OF INNOVATIVE MATHEMATICS LEARNING Vol. 8 No. 2 (2025): VOLUME 8 NUMBER 2, JUNE 2025
Publisher : IKIP Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/jiml.v8i2.24636

Abstract

The importance of the teacher's role in increasing students' interest and motivation in learning mathematics is that one of the steps taken is using interactive learning media in the form of E-Comic supported by the RME (Realistic Mathematics Education) learning approach. Using E-Comic in mathematics lessons can summarize the material and present it interestingly. This study aims to describe the development of learning media using E-Comic, students' responses to E-Comic on cylindrical geometry material, and the process of developing E-Comic. This study is an RnD (research and development) study using the ADDIE model with four stages, namely analysis, design, development, and implementation. The subjects of this study were 30 junior high school students and 3 validators as media experts and material experts. The object of this study is the learning media for cylindrical geometry using E-Comic with the RME approach with the help of the Canva application. The data collection tools used were validation sheets and student response questionnaires. The response questionnaire was closed and contained eight questions. The results of this study indicate an average validation of the E-Comic media of 80% with a very valid category. At the same time, the average student response results were 87% with a very practical category. From the results obtained, the E-Comic learning media with the RME approach is very valid and practical to use in the learning process and can increase students' interest and motivation to learn about the material on cylindrical spatial structures.
Co-Authors Harry Dwi Putra, Harry Dwi Heris Hendriana Nelly Fitriani, Nelly