Unsure if they work. Missing battery cover. Texas Instruments calculator bundle includes the TI-84 Plus Graphing Calculator in a vibrant yellow "School Property" edition and the TI-30XIIB Scientific Calculator in blue. The TI-84 Plus features a large display, USB connectivity for data transfer, and a slide-on protective cover. The TI-30XIIB offers a two-line display ideal for general math and science coursework. Both units are essential tools for students from middle school through college, providing reliable performance for algebra, statistics, and trigonometry. Note: The TI-84 Plus has "School Property" printed on the front and an "AMPED" logo on the cover. Batteries are included for the TI-84 Plus; the TI-30XIIB is solar and battery powered.