MODEL- TI89TIVSII VENDOR- TEXAS INSTRUMENTS FEATURES- TI89 Titanium Overhead Viewscreen The TI ViewScreen panel makes a great addition to your classroom! The panel works with your overhead projector to enlarge and project the image of your TI calculator screen so the entire class can see and grasp what you are presenting. This enhances visual learning and student understanding of concepts. It also reduces the time you spend working individually with students on handheld basics. Includes Carrying case ViewScreen panel and AC adapter.