Texas Instruments TI-73 Explorer User manual

11/14/01 © 2001 Texas Instruments
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How To…
Start and Quit the Application
Use On-screen Options
View Definitions and Area Formulas
Take the Quiz
Delete the Application
More Information
Error Recovery
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TI-73 / TI-83 Plus Area Formulas Page 2
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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 Area Formulas Page 3
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The Area Formulas application reviews the definitions and the
area formulas for the rectangle, square, parallelogram, triangle,
trapezoid, and circle. The development of the formulas is shown
graphically, and several examples of the calculation of the area
are given for each shape. A 15-question multiple-choice quiz—
you can choose between two levels of difficulty—provides
practice at applying the formulas. Immediate feedback is given
after each problem is answered, and the high score is saved.
The Area Formulas 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 Area Formulas application. Please send
your comments and questions to [e-mail].

TI-73 / TI-83 Plus Area Formulas Page 4
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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 Area Formulas Page 5
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Detailed instructions on installing this and other applications are
available at education.ti.com/guides. Follow the link to Flash
installation instructions.
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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 invites your feedback concerning the functionality and
educational value of the Area Formulas application. Please send
your comments and questions to [e-mail].

TI-73 / TI-83 Plus Area Formulas Page 6
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1. Press
Œto display the list of applications on your
calculator.
2. Select
AreaForm. The application’s information screen is
displayed.
3. Press any key to continue. The programmer’s screen is
displayed.
4. Press any key to continue. The SELECT A MODE menu is
displayed.
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If you are in the middle of an activity, press y5repeatedly
until you get back to the main menu.
To quit the application, select QUIT from the application’s main
menu, or press y5.

TI-73 / TI-83 Plus Area Formulas Page 7
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Many of the screens in the Area Formulas application display
options across the bottom of the screen that you use to navigate
through the application. To select one of these options, press the
graphing key directly below the option.
opqrs
Press a graphing key
to select one of these
options. For example,
press ror s
to select EXAMPLE.

TI-73 / TI-83 Plus Area Formulas Page 8
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To display information about shapes, select DEFINITIONS &
FORMULAS from the SELECT A MODE menu. The SELECT A SHAPE
menu is displayed.
To display this
information…
Select this option:
Display
Shape definition
Shape name from the
SELECT A SHAPE
menu
—or—
DEF from the AREA,
EXAMPLE, or WHY?
screen
Area formula for
the shape
AREA from the shape
DEFINITION screen

TI-73 / TI-83 Plus Area Formulas Page 9
To display this
information…
Select this option:
Display
An example of
calculating a
shape’s area
EXAMPLE from the
AREA screen or the
DEFINITION screen
Tip: Select EXAMPLE
again to display a
different example for
the same shape.
Explanation of the
area formula (not
available for all
shapes)
WHY? from the AREA
screen
Tip: Select WHY?
again to return to the
original AREA screen.
To view information about another shape, select MENU to return
to the SELECT A SHAPE menu, and then select another shape.
Tip
Press y5to return to the previous menu.

TI-73 / TI-83 Plus Area Formulas Page 10
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The Area Formulas quiz contains two levels. Level one assesses
your ability to compute the area of basic shapes. Level two is a
bit more challenging, assessing your ability to compute the area
of irregularly shaped objects. Each quiz consists of 15 problems.
Each correct answer in level one is worth 12 points. Each correct
answer in level two is worth 25 points. Incorrect answers are
worth 0 points in both levels.
1. Select
AREA QUIZ from the SELECT A MODE menu. The SELECT
A LEVEL screen is displayed.
2. Use the arrow keys to highlight a level, and then press
Í. The first problem is displayed.