The objectives of this research are to construct and determine the quality and efficiency of a simple vibration experiment package. This experiment package design was based on free body diagram of content and main knowledge analyzed from behavioral objectives. Quality of the experiment package was assessed by 12 experts in 4 aspects which included theoretical sheet experimental sheet exercise sheet and experiment device design. The efficiency evaluation was performed by a sample group of 18 students. The exercise sheet was done by the students after finishing each teaching topic and examination sheet was done after finishing all teaching topics. Results showed that quality of the constructed simple vibration experiment package was in a high level of 4.8. Efficiency of the experiment package was 80.47/81.85 which was higher than specified in the research hypotheses. Therefore the experiment package could be applied to teach in any classroom with high students learning outcome.

There are three main purposes of this research. The first is to compare teachers ability in classifying content by students knowledge level before and after learning. The second is to study difference of pretest and posttest score according to students level. The third is to compare ability and determine efficiency in classifying content by duration of teaching experiences. Samples in this study were 30 teachers from Rajamangala University of Technology who leamed through CAI media (15 teachers) and who attended computer training course (15 teachers). The questionnaire was used to measure their ability in classifying content by students knowledge level. Results of the study can be concluded as follows: 1. Teachers ability in classifying content before and after leaming differed significantly at the level of 0.05. Howeverability in classifying content after leaming did not show significant statistical difference. 2. The difference in pretest and posttest scores showed that leaming with CAI could increase level of teachers ability in classifying more than attending training courses. 3. Teachers with different duration of teaching experience showed significant different ability in classifying content by students knowledge level at the level of 0.05. 4. Teachers with more than 7 years of teaching experiences showed the highest efficiency in classifying content.