On Saturday, I finished cleaning the 15 old calculators left behind by a retired teacher. I was able to revive four of them. Three of them are TI-83 Pluses, and surprisingly, the lone TI-82 is also in working condition. In this era of handheld devices, the TI-82 an ancient model. I'm not sure if its operations are suitable for AP Stats, but it's nice to see its durability.
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