We’ve mentioned before that we are using the Big Map of North American geology, hanging in Reed Hall, as a way to demonstrate various geological ideas.  Since the map is covered by a sheet of plexiglass, we can mark it up with dry-erase markers with annotations to show where various features can be found on the map.  This time, however, we changed it up a bit.

This lesson, we focused on the extent of glaciers from the last Ice Age.  And what better way to represent a sheet of ice than a large sheet of white paper?  We have also continued to record the locations of large earthquakes that have struck this year.

A large sheet of white paper was used to demonstrate the extent of glacial ice in the last Ice Age.