The purpose of this project was to promote in the students the dexterity performing basic arithmetic operations (addition, subtraction, multiplication and division) which is necessary for the development of the STEAM skills.

It was based on the App mental calculation to perform a tournament of basic operations where meetings were created by stages, valuing both teamwork and improve skills of solving-problem process.

• It was held every Tuesday and Thursday during the break.
• The groups were organized according to the level of skills in the use of the application.
• Maximum 4 students competed with a grower in charge for 20 minutes.
• The tournament lasted one semester.

The tournament faced children against teenagers. It was a thrilling final, demonstrating that the acquired skill, living with others and challenging students cognitively is the path to meaningful learning.