Need a really fun way to get students into simple machines or ancient Rome? This is the activity for your students! Watch as students work with each other to figure out how to use a random object (like a cd case) to launch a marshmallow across the room! Lesson plan includes a read aloud book on the history of simple machines! There is also a descriptive research piece that follows up the activity. Students survey 10 friends to see if which simple machine they feel was used more in ancient civilizations.