The purpose of the study is to investigate the effects of blogging on Turkish undergraduate students' achievement levels in issues of instructional technology in a computer course. Moreover, this study reflects the observations of the instructor and the opinions of the students regarding contributions of blogging to their knowledge acquisition and information searching and sharing skills. The methodological framework of the study is based on a pretest-posttest experimental design with a control group and qualitative research techniques including interviews, document analyses and observations. A total of 68 undergraduate first year students in two groups (N=34 in experimental, and N=34 in control) participated in the pretests and posttests. In addition, a total of 21 students took part in the interview process. The results showed that there was no significant difference between the mean achievement scores of the experimental and control groups in pretest. However, there was a