I. Starakis και Halkia, K., Συγγρ., ‘“Distance dependence” or “Angle of sun rays Incidence Dependence”? The design of an Experimental Device for Teaching about Seasonal Change’, in 7th International Conference on Hands-on Science, Rethymnon, Greece, 2010.

I. Starakis και Halkia, K., Συγγρ., ‘Why is it hotter in Summer than in Winter? K-5 students’ & Pre-service elementary teachers conceptions of Seasonal Change’, in XIV Symposium of the International Organization for Science and Technology Education (IOSTE), Bled Slovenia, 2010.