Data Analysis
In order to analyse the data obtained from the study, ―academic achievement test‖ and ―English course
attitude scale‖ were used. The statistical analyses were made via SPSS 17.0. In this study, statistical techniques
such as mean ( X ), standard deviation (Std. Dev.) and the independent samples t-test were used in the analysis
of the data. The p value was held as .05.
Findings
Analysis of the First Research Question
The first research question of the study was ―Is there a significant difference between the achievement
levels of the students in the experimental group and the students in the control group in terms of the usage of
project-based learning?‖ So, before the treatment an independent samples t-test was employed in order to
determine whether a statistically significant mean difference existed between the experimental and the control
groups with respect to their pre-knowledge and understanding of concepts in ―past activities‖ unit. The
comparison of pre-test results of the students in the experimental and the control groups are presented in Table 2.
Table 2. Comparison of Pre-Test Achievement Scores of the Students in the Experiment and the Control Groups
Groups η X Std. Dev. df t p
Experimental 30 48.5 17.5
64 0.695 0.94*
Control 30 48.2 17.9
*p>.05
In Table 2, the pre-test achievement scores of the students in the experimental group and the control
group have been compared. The average score of the students in the experimental group has been found as X
experimental= 48.5±17.5; and the average pre-test score of the students in the control group has been found as X
control= 48.2±17.9. The difference between the students of these two groups has been analysed through
independent samples t-test. The t-value has been found as [t(64)= 0.695]. According to these results, there is no
statistically significant difference between the pre-test scores of the students of these two groups in .05 level
[p= .94, p>.05]. Prior to study‘s experimental process, it can be said that both groups‘ pre-learning levels in
―past activities‖ unit in English lesson are equal to one another.
Table 3. Comparison of Post-Test Achievement Scores of the Students in the Experiment and the Control
Groups
Groups η X Std. Dev. df t p
Experimental 30 73.3 12.4
64 3.26 0.0018*
Control 30 62.3 15.1
*p