The construction of a Mathematics Process Skills test for Prathom Suksa 6 Students by Application of Generalizability Theory

Abstract

This research has the following objectives; (1) to construct a mathematics process skill test for Prathom Suksa 6 students and (2) to verify the quality of the model for mathematics process skill test of Prathom Suksa 6 students by applying Generalizability Theory. The research population are 420 Prathom Suksa 6 students out of 36,087 students from 11 schools out of 430 schools under the Bangkok Metropolitan Administration, during the second semester of the 2016 academic year. The population was selected by multi-stage sampling. The research tools are the model for mathematics process skill test of Prathom Suksa 6 students. That is a essay test.  The analyzed statistics comprised the basic statistics and Cronbach’s Alpha Coefficient: α, then finding out the quality of a mathematics process skill test by finding G-Coefficient. The research found out that the mathematics skill test which have the length of 10, 15 and 20 questions and the number of examiners who assessed the test forms to be 1,2 and 3 persons, they have high reliability and when increasing number of tests and examiners will make higher reliability.