Abstract:
The purpose of this research was to study the problems of Science laboratory teaching in Primary school, The office of Udonthani Provincial Primary Education on the five aspects of preparing lesson, usage of science process skills, experimental equipment, the security of experiment, and lastly testing and evaluation and to compare them according to their teaching experience. The population were 143 science teachers from 143 schools in primary school the office of Udonthani Provincial Primary education The questionnaire on five aspects of their problems in laboratory teaching were preparing lessons, usage of science process skills, experimental equipment, the security of experiments, and testing and evaluation. It was found that the content validity. The r4eliability of the questionnaire by alpha coefficient was at 0.93 Statistics for analyzing were mean (m), standard deviation (s) and differences result of mean. The result indicated that : 1. The problems of science laboratory teaching in primary school the office of udonthani provincial Primary education in total and five aspects of experimental equipment, the security of experiments, and testing and evaluation, aspects of preparing lessons and usage of science process skills were medium 2. The Science teachers that who different on their teaching experiences had different problems laboratory teaching both the overall and the five separated aspects. Those with under neath 5 years teaching experiences got more problems than those with since 5 years