There are great sites for geogtraphy in education. Although these will be known to Georgraphy Teachers, some may not know about them. The first site is Geoscience Australia http://www.ga.gov.au/nmd/products/digidat/geodata250K_GE.jsp where you can purchase the 250k topograpical layer covering australia for 99 dollars. All data said to be less than five years old. Another site recommended is http://www.ilovegis.com/index.html gis 4 kids.