Activities/Mateton

Introduction
A blackboard that let the children do basic math as they would in their exercise book, and let the teachers analyze how the children thinks and where and how they made mistakes. The possible operations are addition, subtraction, multiplication and division, and all of then could be done with the needed quantity of digits. The operations is kept in the Journal along with the complete history, step to step, of how it was created, making easy a teacher correction.