----------------------------Original message---------------------------- I don't know if this info has been posted here before. If so, I apologize. Tasa Graphic Arts has 3 interactive cdroms of interest to maps-l folks: Introduction to Topographic Maps--$59 Explore the Planets--$59 The Theory of Plate Tectonics--$59 These are designed for 7th grade to college. I have seen the Plate Tectonics one. It is very well done. It also has its text in Spanish. They are worth checking out. 1-800-293-2725 --Christopher JJ Thiry Map Librarian Colorado School of Mines [log in to unmask]