Assess students' ability to apply basic human-centered design principles (user needs, affordances, feedback, accessibility) and cognitive load theory (intrinsic, extraneous, germane) to evaluate a simple mobile app interface. Provide a short interface description or image; require learners to (1) identify key usability and accessibility issues, (2) classify primary sources of cognitive load, and (3) propose three prioritized, evidence-based design changes that reduce extraneous load and improve task efficiency and user comprehension. Responses should include brief justifications linked to HCD and cognitive load principles.