The present study aims to investigate the effect of using an intuitionapproach on improving the understanding of the concept of “division by zero” through dynamic diagrams in the GeoGebra environment. Division by zero is one of the challenging topics in mathematics education, which is often accepted by students merely as a rule, without conceptual understanding. In this regard, inspired by the approach introduced by Droujkova and McLoughlin (2013), an instructional intervention based on dynamic visual representations was designed and implemented. In this quasi-experimental study with a pre-test–post-test design, 70 high school students from Shazand city participated. The data analysis results indicated that the educational intervention significantly improved students’ conceptual understanding of division by zero. The findings suggest that the use of visual and dynamic educational tools such as GeoGebra can effectively enhance students’ conceptual understanding of abstract mathematical concepts and should be considered in the design of innovative teaching methods