This paper highlights the main aspects in design and development of an educational software tool that belongs to the simulators category, proposed to support teaching and learning processes in the topic of drawing conic sections, such as the hyperbola, parabola, circumference and ellipse in rectangular coordinates in mathematics field. The educational simulator was designed using a multiagent system with an ontology in order to increase the application performance and the feedback to students in Web learning environments. The simulator was completely developed in Java programming language under the Java 2 Enterprise Edition specification with the Java Server Faces framework using open source tools. In addition, the pedagogical design was based on the constructivism pedagogical model and the problem based learning model in order to develop an innovative tool focused on a modern approach in education. As a result this project propose an innovative design as an example, which can be followed, in order to develop educational simulators for mathematics using intelligent agents, semantic Web and modern educational approaches.