3-5 pm Learning Assistant & Cross-College Challenge presentations 4-7 pm BU Spark! Demo Day Since 2023, the Expo, presented by Boston University’s Undergraduate Affairs, has been held at the end of every semester, providing a regular opportunity to celebrate interdisciplinary collaboration, real-world impact, and the power of experiential learning. The spring Expo will showcase more than 100 student projects undertaken in conjunction with the Cross-College Challenge, the Learning Assistant Program, and BU Spark!. Learn more about each program’s presentations below and check back for updates and further details in the weeks ahead.