This study reports on the use of Inquiry-based science education (IBSE) materials and activities on the concept of Sound that have been used to teach lower and upper secondary school students by teachers who have participated in IBSE teacher education (Slovakia, Italy) as well as to teach pre-service teachers (Ireland). An IBSE method has been adopted by the ESTABLISH project (FP7, 2010-2013) to promote the implementation of innovative teaching and learning approaches for student-led inquiry based activities in the classroom.