As part of a pilot program of the Hookie project in Barcelona, Esther Cardeñosa, in collaboration with the Dyna Tech team, has used two Hookie as mediators in a 3rd grade class to work on mathematics. These tests were the first pilot in an environment of regulated education and the results have been much more than satisfactory. Two Hookie have been working hard proposing activities related to mathematics and correcting them at the moment to 8 students of 3rd grade of the school Sagrat Cor Sant Josep Obrer. At the same time that they helped the teaching staff, they interacted directly with the students, giving them very graphic feedback about their progress in the activities, which made them much more participatory and motivated to continue learning. Link of the publication in the Sagrat Cor Sant Josep Obrer: https://goo.gl/b3ZiAz