Texas Instruments TI-73 Explorer Quick start guide
TI-73 / TI-83 Plus Number Curiosities Page 2
Important Information
Texas Instruments makes no warranty, either expressed or
implied, including but not limited to any implied warranties of
merchantability and fitness for a particular purpose, regarding
any programs or book materials and makes such materials
available solely on an “as-is” basis.
In no event shall Texas Instruments be liable to anyone for
special, collateral, incidental, or consequential damages in
connection with or arising out of the purchase or use of these
materials, and the sole and exclusive liability of Texas
Instruments, regardless of the form of action, shall not exceed
any applicable purchase price of this item or material. Moreover,
Texas Instruments shall not be liable for any claim of any kind
whatsoever against the use of these materials by any other
party.
Graphing product applications (Apps) are licensed. See the
terms of the license agreement for this product.
TI-GRAPH LINK and TI Connect are trademarks of Texas
Instruments. All other trademarks are the property of their
respective owners.
TI-73 / TI-83 Plus Number Curiosities Page 3
What is the Number Curiosities Application?
This application illustrates and animates interesting and fun facts
about numbers from 0 through 25. The application was inspired,
in part, by the book, Numbers: Facts, Figures, and Fiction, by
Richard Phillips.
The Number Curiosities application introduces students to four
types of information about numbers from 0-25:
•Whether the numbers are prime or composite, and how they
are factored
•Geometric facts
•Number sentences
•Real world facts
The Number Curiosities application is a concept application that
TI wants to share with our customers, educators, and students
before the product definition and testing are complete. It is an
alpha software version, and as such, it may contain
imperfections, or the coding may be incomplete.
TI invites your feedback concerning the functionality and
educational value of the Number Curiosities application. Please
TI-73 / TI-83 Plus Number Curiosities Page 4
What You Need
Note
In this user guide, any information that pertains to the TI-83 Plus also
pertains to the TI-83 Plus Silver Edition, unless otherwise noted.
Hardware and software
Notes
TI-73 with version 1.50 or higher of the
Graph Explorer software
—or—
TI-83 Plus or TI-83 Plus Silver Edition
with version 1.13 or higher of the
operating system software
You can download a free copy of the
latest Graph Explorer or operating
system software from
education.ti.com/softwareupdates.
Follow the link to Operating Systems.
Computer with Windows®
95/98/2000/XP, Windows NT®, or
Apple® Mac® OS 7.1 or higher installed
TI-GRAPH LINK™ computer-to-
calculator cable
If you do not have this cable, call your
distributor, or order the cable from
TI's online store.
TI-GRAPH LINK software that is
compatible with the TI-73 or the
TI-83 Plus
—or—
TI™ Connect software (available at the
end of 2001). TI Connect works with all
supported models of TI graphing
calculators.
You can download free copies of
TI-GRAPH LINK and TI Connect from
education.ti.com/softwareupdates.
Follow the link to Connectivity
Software.
TI-73 / TI-83 Plus Number Curiosities Page 5
Where to Find Installation Instructions
Detailed instructions on installing this and other applications are
available at education.ti.com/guides. Follow the link to Flash
installation instructions.
Getting Help
The instructions in this guidebook are only for this application. If
you need help using the TI-73 or TI-83 Plus, refer to its
comprehensive guidebook at education.ti.com/guides.
TI-73 / TI-83 Plus Number Curiosities Page 6
Starting and Quitting the Application
Starting the Application
1. Press
nto display the list of applications on your
calculator.
2. Select
NumCurio. The application’s information screen is
displayed.
3. Press any key to continue. The acknowledgement screen is
displayed.
4. Press any key to continue. The developer’s screen is
displayed.
5. Press any key to continue. The application’s main screen is
displayed.
Note
The first time you run the application, 0 is highlighted and its
factorization information is displayed. When you run the
application subsequent times, the last number and fact you
viewed is displayed.
Quitting the Application
To quit the application, press \.
TI-73 / TI-83 Plus Number Curiosities Page 7
Navigating
•To move the cursor to a number on the number line, use the
arrow keys (_and a) or the X= option.
•To select an option to display information about the number,
press the graphing key directly below the option.
•If you press awhile the cursor is on 25, a message is
displayed that encourages you to search for other number
facts. Press any key to move the cursor to 0.
RSTUV
Press a graphing key
to select one of these
options. For example,
press Uto select
NUM.
TI-73 / TI-83 Plus Number Curiosities Page 8
Option
Description
X= allows you to move the cursor quickly to
another number.
Select X=, and then enter a number. If the
number has one digit, press ¯to move the
cursor to the number. If the number has two
digits, the cursor automatically moves to the
number after you enter the second digit.
The same type of information (FAC, GEOM,
NUM, WOW) that was displayed for the previous
number is displayed for the new number.
FAC displays the factorization of the number and
whether the number is prime or composite.
A prime number is a whole number greater than 1
that has exactly two factors, itself and 1.
A composite number is a whole number that has
more than two whole-number factors.
GEOM displays a geometric fact about the
number.
TI-73 / TI-83 Plus Number Curiosities Page 9
Option
Description
NUM displays one or more number sentences
about the number.
WOW displays a real-world fact about the
number.
TI-73 / TI-83 Plus Number Curiosities Page 10
Deleting the Application from Your Calculator
TI-73
1. Press
\/to display the MEMORY menu.
2. Select
Delete.
3. Select
Apps.
4. Move the cursor to NumCurio.
5. Press
¯. A confirmation message is displayed.
6. Select
Yes to delete the application.
TI-83 Plus
1. Press
\/to display the MEMORY menu.
2. Select
Mem Mgmt/Del.
3. Select
Apps.
4. Move the cursor to NumCurio.
5. Press
^. A confirmation message is displayed.
6. Select
Yes to delete the application.
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