Causal Factor Influencing to Science Achievement of Mathayomsuksa 3 students in the Upper Northeastern Region

Abstract

The purposes of this research are to study the relationship between various factors
and the achievement of Matthayomsuksa 3. The sample consisted of 827 Matthayomsuksa
3 student in the Upper-northeast Thailand, the second semester of the academic year 2008,
by the multi-stage random sampling technique. Two instrument in this study were A science
achievement test; with difficulties ranging .24-.62, discriminating powers ranging 024-.48 and a
reliability of .73, and A scale on factors influencing science learning achievement comprising
with 4 parts : instruction behavior, science attitude, self-directed learning, scale on perception
of science self-ability; with discriminating power ranging .32-.76 and reliability of .84 -.90.
Data analyze by path analysis with latent variables.
The results were shown as follows:
The self-directed learning had a direct effect to science learning achievement,
teaching behavior and self – ability in Science
The model was congruence with the empirical data data with x^2 = 105.82, x^2
/df = 0.96, GFI = 0.989, AGFI = 0.971, RMSEA = 0.000 and SRMR =0.018