This work presents a proposal for using Educational Robotics as a teaching tool for the study of the irrational number pi using the LEGO MINDSTORM EV3 robotics kit. The theme of the work was chosen based on the need to transform the learning environment into an attractive place for the student, inserting technology as the main teaching object and allowing the development of logical reasoning and teamwork. Based on what describes the BNCC, according to the LEGO® methodology, four sequential lesson plans were developed, applied to a class of 7th of Elementary School and presented the results. The lesson plans sought the protagonism of the student, leading him to assume the role of investigator of mathematical concepts and skills essential for him to have the mathematical literacy necessary and required by the new basic guidelines of education.