The cell is a staple of any life science or biology course. Looking for a simple way to get students understanding limitations on cell size? Marshmallows to the rescue! Students use marshmallows (mini, regular, and jumbo sizes) as model cells and follow the lab instructions to calculate their surface areas and volumes. Follow-up questions will help you assess students' understanding. Feedback for freebies is appreciated! Thanks! Happy teaching!! ~ . ~ . ~ . ~ . ~ . ~ . ~ . ~ . ~ . ~ . ~