This is an activity to apply bearings; trigonometry and pythagoras.It has an image of a map with a grid overlaid; included the original publisher document and a pdf version. I printed this off in sections and then laminated and taped them together. It fits just over 2 tables joined together in a square. I even used toy tanks with this. If laminated it allows the use of dry wipe markers on the grid.
The Battle Of Horsforth Desert