1. Children's understanding of familiar astronomical events
2. COHEN, M. How can sunlight hit the Moon if we are in the dark? Teachers' concepts of phases of the Moon. Paper presented at the Seventh Annual Henry Lester Smith Conference on Educational Research. February2, Bloomington, Indiana.
3. JONES, B. 1991. “Pre-service elementary teachers' explanations of diurnal, seasonal and lunar phenomena”. Australia: University of Tasmania. Unpublished paper
4. Children's conceptions of the earth, sun and moon
5. Children's concepts of the earth and the sun: A cross cultural study