The SES La Llosa de Ranes and Its Success in Mental Calculation

Published on May 02, 2026 | Translated from Spanish

SES La Llosa de Ranes has managed to stand out in mental arithmetic olympiads, boosting its students' mathematical skills. The project started in 2015 after a visit from seven-time world champion Alberto Coto García. The mathematics department, led by Rebeca Castro, collaborated with his platform to participate in virtual olympiads, improving academic results.

Students of SES La Llosa de Ranes focused on solving mental arithmetic exercises on whiteboards, with success graphs and the image of Alberto Coto García in the background.

Virtual platform for mental development 🧠

The key to the project was integrating a digital mental training platform, based on spaced repetition algorithms and timed exercises. Students complete daily five-minute sessions, solving arithmetic operations with numbers up to three digits. The system records progress in speed and accuracy, allowing teachers to adjust the difficulty. This methodology has improved performance on standardized tests, demonstrating that mental arithmetic is not just innate talent, but constant practice.

Multiplying efforts, not just numbers 😄

Those who thought mathematics was for geniuses with a calculator in hand are mistaken. In La Llosa de Ranes, students have discovered that adding 2+2 no longer requires raising a hand to ask for an app. Now they solve operations faster than their parents find the car keys. Of course, teachers warn: the only risk is that students start calculating the change at the supermarket before the cashier does.