Analisis Instrumen Kemampuan Matematisasi Siswa dalam Menggunakan Modul Komunikatif

Abstract

This study aims to determine the characteristics of students' mathematical ability in using the communicative module in terms of validity, reliability, discriminating power, level of difficulty and interpretation of the percentage of understanding and readability. The type of research used is evaluative research. Data collection techniques using documentation. The data analysis technique used is descriptive quantitative using the Microsoft Excel program. The results of this study indicate that: 1) Based on the criteria for the validity of the items obtained 6 items are 100% valid with a very high interpretation of 83% and a high 17%; 2) The reliability of the mathematical ability is said to be reliable with r = 0.98 with a very high interpretation; 3) The distinguishing power of all items has sufficient interpretation; 4) The level of difficulty obtained moderately interpreted questions as many as 4 items (67%) and with difficult interpretations as many as 2 questions (33%); 5) The percentage of understanding and readability of the contents of the questions by students is 66.7%.