For a TI-83 Plus, there is a somewhat simpler way. You can go into Memory (2nd + the plus button), go to Mem Mgmt/Del (2), go to all (1), and there will be a list of all programs, lists, matrices, etc. Scroll up and down with the arrow keys to what you want to save, press enter, and an asterisk will appear. Congratulations! You have now archived your goods. When the RAM is "cleared," these programs will remain. Very useful, but only when the teacher is using the "RAM cleared" screen to verify the clearing.