The Math Forum

Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.

Math Forum » Discussions » Professional Associations » nyshsmath

Notice: We are no longer accepting new posts, but the forums will continue to be readable.

Topic: Coolest TI-83 ever
Replies: 1   Last Post: Oct 23, 2013 8:21 PM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
Evan Romer

Posts: 168
Registered: 1/8/09
Coolest TI-83 ever
Posted: Oct 23, 2013 7:56 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

Check out this TI-83+:

This is one our school calculators. The entire display has been
reflected horizontally. No idea why -- it just happened spontaneously.
In fact, later in the day, the display was reflected horizontally AND
upside down. Now it is back to just reflected horizontally. (No I did
not photoshop these images.) I might be able to fix it by taking out
all 5 batteries, but I don't really want to.

For several years I have covered my classroom clock and put up a
backwards clock instead. And I have a collection of a dozen watches,
some go forward, some go backward (some with forward displays, some
with reversed displays, one with a mirrored display) -- I wear a
different watch every day. And I have a map of the world in my
classroom that is printed with south on top, north on the bottom.

So I didn't know it until today, but THIS is the calculator I have
always wanted.


Math question: the composition of a horizontal reflection and a
vertical reflection is ... ?

Answer: a 180-degree rotation. So earlier today when it was in
reflected-and-upside-down mode, if you turned the calculator upside
down, the display looked normal.

Evan Romer
Susquehanna Valley HS
Conklin NY

* To unsubscribe from this mailing list, email the message
* "unsubscribe nyshsmath" to
* Read prior posts and download attachments from the web archives at

Date Subject Author
Read Coolest TI-83 ever
Evan Romer
Read RE: Coolest TI-83 ever
Morse, Dana

Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© The Math Forum at NCTM 1994-2018. All Rights Reserved.