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All Journal Journal of Research on Mathematics Instruction (JRMI)
Dewi Yuliani
Universitas Riau
Mathematics

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Analysis of Students’ Errors in Solving the Circle Equation of Class XI Multimedia Students at SMKN 3 Pekanbaru Dewi Yuliani; Kartini
Journal of Research on Mathematics Instruction (JRMI) Vol 2 No 1 (2020): December
Publisher : Magister Mathematic Education Department Faculty of Teacher Training and Education Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33578/jrmi.v2i1.40

Abstract

The inability of students to solve problems will result in errors in solving them. This study aims to describe students' errors in the circle equation material and the factors that cause errors in class XI SMKN 3 Pekanbaru and solve math problems related to circle equation material. This research is descriptive research. The subjects in this study were 36 students of class XI SMKN 3 Pekanbaru. The data collection technique was carried out by means of a learning outcome test which consisted of instruments describing the circle equation. As for the percentage of errors made by students, namely students who made fact errors as much as 29% due to the lack of accuracy of the students in writing the symbols of the circle equation, the students made 23% misconceptions because the students did not understand the questions well so that students are random in determining the formula used to solve the problem, students made a principle error of 16% because the students were careless in determining the formula to solve the questions, students make operating errors as much as 32% because students are not careful in doing algebraic operations and are in a hurry to work on the problem.
Students’ Mathematics Reasoning Ability Reviewing from Learning Interest of Students at SMPN 16 Pekanbaru Dewi Yuliani
Journal of Research on Mathematics Instruction (JRMI) Vol 2 No 2 (2021): June
Publisher : Magister Mathematic Education Department Faculty of Teacher Training and Education Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33578/jrmi.v2i2.59

Abstract

This research .is.motivated. by the. existence of. facts. in the.field.which. show.the.low.mathematical.reasoning.skills found in students at SMP Negeri 16 Pekanbaru. One thing that students must master to achieve learning goals is mathematical reasoning abilities. In other words, students can use mathematics as a reasoning tool both in learning mathematics in class and everyday life. This research aims to determine the difference between students' mathematical reasoning abilities and low learning interest. Good student learning interest will make students happy to learn mathematics without coercion, with good learning interest will affect students' mathematical reasoning abilities. Mathematical reasoning abilities can be improved through increasing student interest in learning. This research is a qualitative descriptive study, the population in this study were all eighth-grade students of the 2020/2021 academic year. The sample taken was class VIII.2 using a random cluster. Data collection techniques and research instruments are tests of mathematical reasoning abilities on quadrilateral material, questionnaires in questionnaire sheets for learning interests, and interviews. Based on the results of data analysis, it can be concluded that: 1) There are differences in mathematical reasoning abilities between students who have high learning interests. 2) There are differences in mathematical reasoning abilities between students with low interest in learning.
Co-Authors Kartini