Ti 84 Emulator. That is about all I know about it. This emulator is a free online version of the NumWorks graphing calculator.
It's the ideal tool for class presentations and for remote learning. There is no GBA emulator for the CE yet and such emulator would probably run much slower and I think RAM might. And yes, if you have got a tablet.
Each of these and their emulators are listed below.
Download the zipped files to your desktop or location you can find.
And yes, if you have got a tablet. The TI-Nspire CX is the most powerful calculator produced by Texas Instruments, and because of this, there are many emulators that run on it. Texas Instruments - TI-xx Series Emulators on.