Google Maps is simple online application that can be used to teach spatial awareness.  Since it is online no special software is required.  See some samples at:

http://maps.google.com/maps/ms?ie=UTF8&hl=en&msa=0&msid=109599488892121516282.00045250c375c2e1644ca&t=h&z=7

http://maps.google.com/maps/ms?ie=UTF8&hl=en&msa=0&msid=109599488892121516282.00044ff4b24d627b6c15d&t=h&z=6

http://maps.google.com/maps/ms?ie=UTF8&hl=en&msa=0&msid=109599488892121516282.00046694b7d7bac5f0e69&t=h&z=18

http://maps.google.com/maps/ms?ie=UTF8&hl=en&msa=0&msid=109599488892121516282.000458c33690c30c4c3e2&t=h&z=17

http://maps.google.com/maps/ms?ie=UTF8&hl=en&msa=0&msid=109599488892121516282.00044ff3f1fa78372fe9a&ll=39.688365,-121.828251&spn=0.020079,0.028839&t=h&z=15

It is easy to use and maps can be embedded into instructional and chapter web sites.   Maps can be created on the fly to show event locations and travel.