Texas Instruments TI-73 Explorer Quick start guide

TI-73 / TI-83 Plus

Number Curiosities

How To…

Start and Quit the Application

Use the Application

Delete the Application

More Information

Error Recovery

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

send your comments and questions to [email protected].

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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