This work is the result of a collaborative and passionate effort. The idea we present here is ambitious but necessary: ​​to compile a digital resource for each day of the month, designed to address the Sustainable Development Goals (SDGs) in higher education.

The resources included in this publication go beyond theory. They are an invitation to action and critical thinking, designed to adapt to the flexibility of every classroom at university. With a distinctly interdisciplinary approach, we explore the connection between mathematics, physics, chemistry, economics, education, statistics, etc., with real-world problems. From calculating energy consumption in the shower or saving by switching to LED light bulbs, to analyzing global poverty or understanding Earth Overshoot Day, each activity is designed to encourage active learning and informed decision-making.

The proposals cover almost all the SDGs, addressing topics as diverse as gender equality, underwater life, or responsible consumption. Of course, this work is just the beginning; the task of educating for sustainability is an ongoing journey, which we hope this book will help illuminate and, perhaps, inspire new and better proposals and projects.

This compendium is more than just a guide; it’s a tool for developing essential skills such as problem-solving, data analysis, and, above all, the awareness that every little action counts. We are convinced that, through these activities, students will not only acquire knowledge but will become agents of change, prepared to face the challenges of a world that demands our attention and dedication.

We hope that these pages will become a source of inspiration and an indispensable resource for all those who, like us, believe in the transformative power of education for a better world.

María Dolores Merchán Moreno.

These 31 digital resources will be published by Ediciones Universidad de Salamanca, with the corresponding ISBN and the EU co-funding logo.

These resources  reflect the views only of the authors, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

    31 digital resources © 2025 by GIRLS Project partners is licensed under CC BY 4.0.

To view a copy of this license, visit https://creativecommons.org/licenses/by/4.0/