“…• The Earth's materials: minerals and rocks (Happs, 1982(Happs, , 1985Dove, 1998;Ford, 2005); • The Earth's Structure (Lillo, 1994;Sharp et al 1995;Blake, 2005); • The Earth's processes: mountains, volcanoes, earthquakes, weathering and erosion, and geological time (Bezzi & Happs 1994;Sharp et al 1995;Russell et al 1993) • Geological time (Hume, 1978;Ault, 1982;Trend, 1998). These studies confirm that children develop their own, mostly non-scientific, understanding of earth science concepts before instruction, and describe and interpret these in everyday terms that are familiar to them.…”