It is always a rush to drop objects from great heights, and with this physics experiment, class members will not be disappointed! They drop a single coffee filter from a balcony or table top, record the time it takes to reach the ground, and then calculate the terminal velocity. The procedure is repeated, adding a coffee filter to increase the mass with each trial. Consider having groups begin with a stack of 10 filters, then remove one for each subsequent trial so that they stick together better during the descent. You will not find extensive details in the teacher's guide, but it serves as a valuable outline providing some basics to get you started: the scientific question, a materials list, safety precautions, and a link to supportive reading material.