Here's a couple of recent posts on the ESRI Education Community site that may be of interest to Explorer users.

Fun with GIS using AGX: prepping for hurricanes is a post by Charlie Fitzpatrick, ESRI education manager, that covers using NOAA's nowCoast services. Those are published using ArcIMS, and are among the many kinds of mapping services that Explorer can use.

Joseph Kerski takes a look at the regional spatial distribution of two businesses in Explorer using business data imported from a spreadsheet.