PBL – Levels of Engagement A bridge will take you from one place to another … but there are multiple pathways to learning One-hour project: Leonardo’s Bridge. Build an arch bridge from 18 sticks. Organized by parents, supplied by local company RAFT. One day project: Newspaper Bridge. Construct a bridge that can support 500g, using only Newspaper. One Day to One Week Project: Research and Report on a topic. Topic can be teacher-assigned (bridge) or chosen by students. (Golden Gate Bridge using iPad app… Explain Everything) One Month or More Project: Gum San, a play about Chinese Immigration to the USA. Researched by parents, written and directed by teacher, performed by students. The play was part of a 2-month study of the California Gold Rush involving all 4/5 classes at the school.