This document outlines Larry Baker's presentation on using challenge-based learning (CBL) to implement group projects and assessments. CBL involves assigning students multimedia group challenges to solve real-world problems. It encourages collaboration, creativity, and the development of skills like critical thinking. Baker discusses strategies for structuring CBL projects, including forming groups, setting milestones, using shared documents, and collecting student reflections. Reflections prompt students to evaluate their individual contributions, the group's process, and what they've learned, and can be used as part of the assessment. Baker suggests presentations by groups and feedback from outside experts as additional forms of authentic assessment for CBL.