GREAT INTRODUCTION TO GEOGRAPHY, GEOLOGY AND HISTORY - US, European & Australian Versions - Give your students a visual understanding of Earth's geological, geographic and human history using this fun outside activity. Measured in 45, 50 & 100 metre & 100 feet distances (while also being fully scalable), this exercise marks out significant events in history, from the formation of the earth through to the creation of Facebook, using measured physical distances to demonstrate periods o