Students are introduced to ice cores as a source of past climate data. Students read about climate indicators measured through ice samples. They are provided 160,000 years of ice core data from the Vostok core (origin East Antarctica) and, through a series of semi-open ended “tasks”, students organize and analyze the data within Excel. Students must find patterns, describe rates of change, and draw conclusions about changes in the atmosphere using ice core data. Students explain the value of ice core records to their understanding of climate change in lab report format as the final product of this project. This activity should take 3-4 hours, longer if including an introduction to Excel.