A math teacher compared two methods for teaching division to his students. She randomly assigned 60 students into two equal-sized groups. Group 1 was taught with Method A using an innovative and technology-based method, and Group 2 with Method B using traditional textbook oriented methods. A comparison of post-test scores indicated that the results were significantly different (p =.03) in favor of Method A. When the teacher examines the mean scores of the two groups, the difference was 5.5 points on a 100-point scale and the pooled standard deviation is SD=10.

Based upon the analyses, the math teacher should conclude that:

A There is no practical significance.

B There is no difference in the effect on the test score between using the two different methods for teaching division to his students.

C Method A using an innovative and technology-based method can be more effective than and Method B using traditional textbook oriented methods in improving students' test score.

D Method A using an innovative and technology-based method can be less effective than and Method B using traditional textbook oriented methods in improving students' test score.