Abstract
After years of lag, Costa Rican Mathematics Education began to undergo important changes thanks to a visionary curricular reform that began in 2012 and the support of different nitiatives by the Mathematics Education Reform Project in Costa Rica. However, in recent
years there have been events that have caused significant pauses in such changes and ha- ve negatively affected the teaching and learning processes of mathematics in the country. In particular, the COVID-19 pandemic generated a series of decisions by the Costa Rican Ministry of Public Education, some positive, such as updating information on access to tech- nologies by students and communicating with them through from official channels like emails and Teams. Other decisions were not so positive, such as, for example, the curricular prio- ritization that was carried out in 2020, left out complete mathematical areas and curricular elements that harm the implementation of mathematics curricula.