Resumen
The COVID-19 pandemic has caused an unprecedented crisis. Worldwide, preschool teachers were invited to develop the students? learning experience in a new digital environment for mathematics. This research investigates preschool teachers? mathematics practices during remote teaching and the use of digital tools in teaching mathematics after their return to actual classes. Views from sixteen Greek preschool teachers were collected with semi-structured interviews and analyzed using thematic analysis. The results showed that mathematical activities such as Numbers and Operations, Geometry, and Measurement occurred during distance learning in digital preschool classrooms. They made little reference to activities related to Algebra, while they did not refer to Data Analysis and Probability. They also seemed to prefer mathematical activities based on Connections and Representation processes in their digital classrooms. Preschool teachers reported that parents supported this process by their presence, and digital learning communities supported learning activities by providing guidelines and innovative approaches to them in digital times. However, after returning to face-to-face schooling, preschool teachers seemed to use digital tools to a lesser degree. They also mention that in face-to-face schooling, they prefer to utilize the authentic communication frameworks emphasizing problem-solving activities to enhance all mathematical processes. Implications for preschool teacher professional development are discussed.