Which display systems allow instructors to draw lines on the screen to emphasize portions of a photo or document?

Interactive displays are designed to facilitate active participation from instructors and students during presentations. These systems allow instructors to draw lines, highlight areas, and annotate directly on the screen in real time. This capability enhances the learning experience by allowing the instructor to emphasize specific sections of a photo or document, making it easier for students to grasp complex concepts and understand important details.

In contrast, visual presenters primarily project physical documents or images but do not offer the same interactivity. Video conferencing platforms are focused on enabling communication over distances and lack the direct interaction with visual materials that interactive displays provide. Duplicated materials, while useful for sharing information, do not support real-time interaction or annotation on a screen. Thus, the interactive display stands out as the most effective option for engaging students and enhancing comprehension during lessons.