When we examine the means in Table 4 we see that the experimental group achieved a mean grade of 47.10
on their mathematics course whereas the control group achieved a mean of 32.16. There is a difference of 14.94
points in favor of the experimental group. The experimental groups post test grades also have a higher mean than
the control groups. The “t” test results conclude that there is a significant difference between the achievement
grade means [t=-1.88; (p=.00