The design of student mathematical representation instrument on problem solving reviewed from introvert-extrovert personality

Abstract

This study aims to determine whether the instrument to be used is feasible or not to obtain research data. The research instrument used is the introvert-extrovert personality testand math-type problem-solving test. The introvert-extrovert personality testconsist of 17 questionsand the math-type problem-solving consist 2 types of questions, that is TPM I and II. The feasibility test of the introvert-extrovert personality instrument includes content validity, internal consistency, and reliability. While the feasibility test of the mathematical problem solving test instrument only used the validity of the content. For the validity of the contents of each test, conducted through expert judgment is the assessment made by experts. The number of respondents who took the test for the instrument test was 35 students. The respondents are students of secondary school in East Jakarta. The results of the instrument feasibility test show that: 1) Introvert-extrovert personality instruments have 17 statements that are eligible to retrieve the research data, and 2) The mathematical problem solving test instrument with linear equation system topic is feasible to use with some revisions from the expert judgment.