Scientific and graphing calculators (TI-84) will be used when necessary and should be available. Any brand of scientific calculator will suffice. You may want to purchase a TI-84 calculator for use at home (not required, but highly recommended). A TI-84 emulator with slightly different features was made available for free on updated student Chromebooks this past school year. When using a classroom calculator, please treat it with the same care as if it was your own device.