Our organisation is a public school, in primary level of the Greek Education system. Primary education is divided into kindergarten, lasting two years and primary schools lasting six years. All levels of education in Greece are overseen by the Ministry of Education, which exercises centralized control over the state schools by prescribing the curriculum, appointing staff and controlling funding. It was founded in 1966 and consists of two classes. Its teaching group consists of 3 nursery school teachers and its facilities are about 50 students (25 students/ teacher). Our age range is 4-6 years old. Our school frequently has students from other countries, such as Albania, Romania, Belgium and Bulgaria. The educational team has participated in several national projects (topics: Mathematics, Culture, etc.) and it is part of an Erasmus+ KA1&KA2. Through these programs, we try to promote preschoolers’ development, as individuals and as a team, while supporting their differences and particularities. The aim of our participation in this program is to stimulate the interest of preschoolers in science and precisely in Math, through active learning. Focusing on this innovative and creative project, will promote communication, learning and enhance European spirit. We believe that Math can become the key of every activity in preschool age, as well as increase critical thinking of students. Math will become the bridge of every project in our school.