The pattern, which is a key concept in understanding the mathematical information and concepts, is the basis in comprehending mathematical relations and in understanding mathematical order and logic. The fact that students discover the relationships contained within the patterns and generalize them helps them develop their skills to better perceive the world around them. The major factors in the development of these skills are the math teachers. The objective of this study is to examine and analyze the pattern generalization performances and strategies of pre-service math teachers. A total of 221 pre-service teachers attending the secondary school mathematics teaching (1st, 2nd, 3rd, and 4th classes) participated in this study. It was found that in a pattern test prepared in different structures (linear, geometric, quadratic) and in different forms of presentations (table, figure, verbal, number), as the class level increased, so did the pattern generalization performances of the teacher candidates. It was also found out that asking patterns within different forms of presentations enabled the teacher candidates to understand the patterns better. Separately, rather than the forms of presentation, it can be stated that the performance to generalize patterns and the pattern structure are more effective.