The self-concept of mathematics must be developed. On Circle material, experimental research with a scientific methodology and a reciprocal teaching style have been conducted. The purpose of this study was to compare how students who learned mathematics using a scientific method and students who learned mathematics using a reciprocal teaching method interacted with each other. In class VIII at one of the junior high schools in Bandung, West Java, the study's Pretest-Posttest Two Treatment Design was used. The quantitative and qualitative analysis of the research data was done using the entire sample or in detail using the high and low categories of prior mathematical knowledge. The findings demonstrated that there were no differences between students who learned using a scientific approach and students who learned using a reciprocal teaching technique focused upon Prior Mathematical Knowledge (high and low). Additionally, it was revealed by the examination of the interaction effect that there is no interaction among teaching and pupils' prior mathematical knowledge (both high and poor) and students' perceptions of themselves as mathematicians .