Homogeneity Testing Analysis of Pretest and Posttest

the data is normal. Normality testing explains that the distribution of students’ score of upper and lower group is regular. Then, homogeneity testing is conducted, and the result shows that the condition of the students from two classes is homogenous because the value of F o F t . The last step is testing the hypothesis by using t-test statistic formula with the significance level α 5. Hypothesis testing is conducted to get the quantitative research finding. Normality and homogeneity testing are aimed to look at the condition of data and to decide the formula of testing, so it uses parametric test to examine t-test statistic. According to the result of t-test, it shows that the value of t o is 5.23 while t t shows the value 2.00. In short, hypothesis testing indicates that t o is higher than t t . The condition in which t o t t shows that null hypothesis H o is rejected. It means alternative hypothesis, “there is an influence of using entertaining Power Point media on students’ understanding of Passive Voice”, is truly proven. The result of t-test statistic shows the entertaining Power Point media gives significant influence on enhancing students ‘understanding of Passive Voice.

2. Qualitative Data

The observation was conducted to know the condition in the classroom while teaching and learning process took place and to support the quantitative data. The observation involved the researcher, teacher pamong, and students. The activity to observe the students in the classroom was done by the researcher who was also the teacher in that class, while teacher pamong observed the researcher in teaching Passive Voice. Based on the observation conducted in the experimental and controlled class, it showed that the students in the experimental class which functions Power Point in their learning process learnt more active and effective than the students in controlled class did. The students where they were in the experimental class was attracted to attend to the material given by the teacher. Moreover, students’ motivation in learning improved, it was proven by students’ performance in the classroom. They become more confident to ask and do the task from the teacher. The development in teaching and learning was not only about the students’ performance, but also teacher’s performance. By utilizing Power Point, teacher could easily grab students’ attention to learn through showing colorful pictures and animation. The teacher also became more creative in designing learning material to create an effective teaching process.