Practice on your own the basic skill in expressing the location of the submarine using the cartesian coordinate system.[br]Can you quickly state and type in the coordinates of the submarine?[br][br](If you encounter difficulty with launching the game, download the ggb file to play)[br](Download and install Geogebra if you don't have it on your system)[br][br][br]Acknowledgement : [br]This resource was modified from Daniel Mentrard's work at[br][url=http://dmentrard.free.fr/GEOGEBRA/Maths/export4.25/repere2.html]http://dmentrard.free.fr/GEOGEBRA/Maths/export4.25/repere2.html[/url][br]http://www.geogebratube.org/material/show/id/21940