I taught Historical Geology as a summer class that was part of USU's pilot summer science course program. I had a tiny but mighty class - so despite the chaotic hard work of the compressed summer schedule, it was super fun. My whole class participated in a giant group project that was to make a Prezi of the Geology of North America. It is here.
Also, one of my students (with help from her toddler on one page) produced this impressive work!