TI-Nspire with Touchpad - Hybrid Teacher Pack Texas Instruments is offering a limited edition TI Nspire with Touchpad Teacher Pack that combines the touchpad keypad with the color and hardware of the original Includes TI-Nspire Operating System v2.1 Powered only by AAA batteries (non-rechargeable) Compatible with existing TI-Nspire accessories Offers a EZ spot yellow slide case and school property engraving on the back