Research tools is a skill, annotations, diphthongs, and test achievement, language, Thailand. The research on this is preliminary research using a single group research and testing before the tried and tested after the experiment. Information collected by test results before and after you learn the lesson. An analysis of the data by calculating the average of the score. Statistics that are used in hypothesis testing to compare the differences of average scores before and after classes using t-test model Dependent.
การแปล กรุณารอสักครู่..