the experimental process and after implementation, students in both the experimental and control groups were administered the “Solar System and Beyond: Space Puzzle Academic Achievement Test”. Two 7th grade classrooms with the same Science and Technology teacher in a primary school in Buca, Izmir were selected as the study group after obtaining necessary permissions. The study was conducted with a total of 53 students, 26 of whom were in the control group while the remaininig was in the experimental group. The implementation was done in the second semester of the 2010–2011 academic year. Courses were taught with project-based learning in the experimental group, and with activities in the 2005 Science and Technology curriculum in the control group. The experimental study lasted in four weeks, and in a total of six weeks including pre-and post-tests. Activity sheets prepared in accordance with project-based learning were used in the experimental group. Activity sheets contain scenarios, comics, videos, and news regarding the subject that were prepared in line with daily life, to attract students’ attention and help them inquire. For the purpose of determining whether the experimental process has an impact on students’ academic achievement, an academic achievement test regarding the unit of “Solar System and Beyond: Space Puzzle” developed by the researchers was used. Fifty-one items appropriate for acquisitions were developed during the development phase of the test and a table of specification was created in order to maintain extent validity of the test. For the purpose of maintaining face and extent validity, 5 professors, 2 instructors, and 2 Science and Technology course teachers were asked for expert review to assess items’ coherence to scientific terms, cognitive terms, and acquisitions. The ratio of agreement among experts was found to be 0.92 for scientific coherence, 0.81 for coherence to acquisitions and 0.85 for coherence to cognitive terms. In line with expert opinions, necessary additions, corrections or eliminations were done and the test with a total of 52 items was made ready for preliminary implementation. The preliminary