This document discusses the challenges and strategies for an art teacher, Marvin Bartel, who teaches at three different elementary schools using a cart to transport art supplies between classrooms. Some of the challenges he faces include not having a dedicated classroom space, sharing storage space, and ensuring discipline is upheld across different schools. However, he has developed strategies like choosing an organized cart, planning lessons together, and utilizing hallway space. He hopes to use his blog to help other traveling art teachers and is interested in participating in research on the "art on a cart" teaching model.