Journal of Research on Mathematics Instruction (JRMI)

Analysis Error Student in Solving Problem Logarithm Based on the Kastolan Procedure

2024-04-26T21:06:49+00:00

Mathematics is very important in teaching students to have and apply mathematical thinking patterns in everyday life and become a reference for studying various other branches of science. One of the mathematics materials is logarithms, where students often make mistakes when solving these problems, so it can indicate how far students have mastered the logarithm material chosen for this research because logarithms have properties that students must understand. So, this research aims to analyze the errors made by students when solving logarithm problems using the Kastolan procedure. Subject in this study, nine students from class X IT SMKS, Darel Hikmah Pekanbaru. The research instrument used a 5-item logarithmic description test instrument. The data analysis techniques are data reduction, data presentation, and conclusion. Based on the research data results, it was concluded that students made conceptual errors, namely the inability to apply the concept of the properties used. Procedural errors were when students were unable to solve the problem until they got the final solution, and technical errors occurred because they made mistakes in calculations to produce answers wrong.

Analysis Error Student Class X Vocational School in Solve Story Questions on the Material System of Three Variable Linear Equations

2024-04-26T21:06:33+00:00

Conducting formative assessments can help students grasp the fundamentals of the subject matter and foster a deeper interest in mathematics. To better understand student difficulties in solving word problems related to SPLTV, researchers have conducted studies to analyze the errors made. This research aims to discover and analyze students' mistakes in solving story problems on the material of three-variable linear equation systems. This type of research is descriptive research with a qualitative approach. The subjects of this research were six students from 31 students of class X TKJT 1 SMK Muhamadiyah 2 Pekanbaru, each consisting of 2 students from the upper, middle and lower groups. In this research, data collection techniques were based on observation, instrument test questions, and interviews, which were used to determine students' errors in solving three-variable linear equation systems. In this research, it can be concluded that students' mistakes are a lack of mastery of concepts in three-variable linear equation systems material and a lack of deeper student mathematics learning so that students make any mistakes in solving problems.