This document discusses user-centered design (UX) and usability testing (UT). UX considers users' needs, wants, and limitations when designing products. UT finds out if a product works for users. There are five components of usability - a product should be effective, efficient, engaging, error tolerant, and easy to learn. Types of usability tests include lab based testing, survey testing, and cognitive walkthroughs where an evaluator completes tasks to understand the user experience. For this project, students will design and conduct a cognitive walkthrough usability test.