New updates have been applied to Dartmouth's ArcGIS Online platform.
For a list of what's new, see the following link:
http://doc.arcgis.com/en/arcgis-online/reference/whats-new.htm
Dartmouth's ArcGIS Online platform can be accessed at:
http://dartmouth.maps.arcgis.com/home/index.html
You can sign in using your Dartmouth credentials.