Computational thinking (CT) as one of the 21st century skills enters early
years education. This paper aims to study the worldwide tendencies of
teaching CT through computing in primary education and primary school
teachers? understanding of CT. A survey of 52 countries has been performed
and complemented by a qualitative study of 15 countries. In order to identify
teachers? understanding-level of CT and its integration approach in the class
activities, a case study of 110 in-service teachers from 6 countries has been
performed. The implications of the research results may be useful for primary
school educators, educational initiatives, government authorities, policy
makers, e-learning system and content developers dealing with support for
teachers aiming to improve their CT professional development qualification.