Validation Measurement, Factor Analysis and Reliability of Mathematics Teaching Practice Instruments Among Secondary School Mathematics Teachers

Abstract

— The goal of this study was to examine the instruments of mathematics teaching practice among
secondary school mathematics teachers. A sum of 100 mathematics teachers was involved in this study.
Data were analysed descriptively using Cronbach’s alpha reliability and exploratory factor analysis (EFA)
employing SPSS software. The results revealed that Cronbach’s alpha value was 0.934, which is higher than
0.60. The results of the exploratory factor analysis revealed four factors with Eigenvalues greater than 1.0. A
KMO (Kaiser-Meyer-Olkin) value of 0.876> 0.6 which indicated that the items in mathematical
reliabilityare adequate for inter-correlation. While the Bartlett Test was significant (Chi-Square 1521.621, p
<0.05. Anti-image value (Measure of Sampling Adequacy (MSA)) for item correlation was greater than 0.6
However, there were three items to be excluded because the values obtained were less than 0.60, which were
the items of G11, G14 and G18. The total variance defined by these three factors was 62.76 per cent.
Accordingly, the overall findings indicated that the items for mathematical teaching practice instruments
could measure and answer the study objective.