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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 



11/14/01 



'2001 Texas Instruments 



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 Tl Connect are trademarks of Texas 
Instruments. All other trademarks are the property of their 
respective owners. 



TI-73 / TI-83 Plus Area Formulas Page 2 



What is the Area Formulas Application? 

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 Tl 
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. 

Tl invites your feedback concerning the functionality and 
educational value of the Area Formulas application. Please send 
your comments and questions to concept@list.ti.com. 



TI-73 / TI-83 Plus Area Formulas Page 3 



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 
Tl's online store. 



TI-GRAPH LINK software that is 
compatible with the TI-73 or the 
TI-83 Plus 
— or — 

Tl™ Connect software (available at the 
end of 2001). Tl Connect works with all 
supported models of Tl graphing 
calculators. 



You can download free copies of 
TI-GRAPH LINK and Tl Connect from 
education.ti.com/softwareupdates . 
Follow the link to Connectivity 
Software. 



TI-73 / TI-83 Plus Area Formulas 



Page 4 



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/quides . 

Tl invites your feedback concerning the functionality and 
educational value of the Area Formulas application. Please send 
your comments and questions to concept@list.ti.com. 



TI-73 / TI-83 Plus Area Formulas Page 5 



Starting and Quitting the Application 

Starting the Application 

1 . Press IAPPSI to 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. 



Quitting the Application 

If you are in the middle of an activity, press [2nd] [quit] repeatedly 
until you get back to the main menu. 

To quit the application, select QUIT from the application's main 
menu, or press [2nd] [quit]. 



TI-73 / TI-83 Plus Area Formulas Page 6 



Using On-screen Options 

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. 



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AREA a g mi * 3 mi 
= 1? 5-1 mi/ 

(fifnUlTDfri(5ftTATEKAHPLE 1 



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I H IWINDOWl [ZOOMl ITRACEI GRAPH I 



Press a graphing key 
to select one of these 
-options. For example, 
press ItraceI or IgraphI 
to select EXAMPLE. 



TI-73 / TI-83 Plus Area Formulas 



Page 7 



Viewing Definitions, Formulas, and Examples 

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 



DEFlMlTIDrMPARfiLLELDflRfiH 



ABnxmniGxiJii:- 

A QUADRILATERAL UITH 
OPPOSITE SIDES PARALLEL. 

I'MEmTlfiREAlfEKAHPLEl 



Area formula for 
the shape 



AREA from the shape 
DEFINITION screen 



m^ammuwstm 



H = HEIGHT 
6 = EASE 



:h 



E 



AREA = H * B St units 

[HTnuYDTTlf ekahple |uhv? 



TI-73 / TI-83 Plus Area Formulas 



Page 8 



To display this 
information... 



Select this option: 



Display 



An example of 
calculating a 
shape's area 



Explanation of the 
area formula (not 
available for all 
shapes) 



EXAMPLE from the 
AREA screen or the 
DEFINITION screen 

Tip: Select EXAMPLE 
again to display a 
different example for 
the same shape. 

WHY? from the AREA 
screen 

Tip: Select WHY? 
again to return to the 
original AREA screen. 



mH:i«*flifliHniifflfin 



?n 



HFt; 



AREA = ? ft * H ft 
= £B 51 ft 

(fifnUlTDfrilATfATEKAHPLE 1 



CEHaZHHHEHM] 

H = HEIGHT 
E: = BASE 



:h 



E: 
AREA = H * B 5-1 units 

Hiiii*HHim«WOT!mm 

EnTnTDfTlfEKAHPLE 1 



To view information about another shape, select MENU to return 
to the select a shape menu, and then select another shape. 



Tip 



Press [2nd] [quit] to return to the previous menu. 



I 



TI-73 / TI-83 Plus Area Formulas 



Page 9 



Taking the Quiz 

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 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 
I enter I . The first problem is displayed. 



•Hin 



A=32s-iin 
B= 21 5-1 in 



C:fi4 5iin 
[■: 12 5-iin 



TI-73 / TI-83 Plus Area Formulas 



Page 10 



3. Calculate the area and then select the letter that 

corresponds to your answer. Your answer is checked, and 
then the next problem is displayed. 



;Hin 



jHnaapBsHs-iin 



After you select an answer, either "CORRECT!" 
_or your answer and the correct answer are 
displayed for a few seconds before the next 
problem is displayed. 



At the end of the quiz, your score and the high score are displayed. 
Select PROBLEMS to return to the select a level screen. 



t'j.iihiaiihun im 



niu!nnim.ifl«a 25 



HTEBoaMEiHranaa 



|'FF;DE:LEHil 



Tip If you need to end the quiz before you have completed all 1 5 

problems, press |clear| to display your current score. The score 
is reset to when you return to the quiz. 



TI-73 / TI-83 Plus Area Formulas 



Page 1 1 



Deleting the Application from Your Calculator 

TI-73 

1 . Press [2nd] [mem] to display the memory menu. 

2. Select Delete. 

3. Select Apps. 

4. Move the cursor to AreaForm. 

5. Press I enter | . A confirmation message is displayed. 

6. Select Yes to delete the application. 

TI-83 Plus 

1 . Press [2nd] [mem] to display the memory menu. 

2. Select Mem Mgmt/Del. 

3. Select Apps. 

4. Move the cursor to AreaForm and press |DEL| . A confirmation 
message is displayed. 

5. Select Yes to delete the application. 

TI-73 / TI-83 Plus Area Formulas Page 1 2 



Installation Error Messages 

Low Battery 

Do not attempt to download a Flash application if the low-battery 
message appears on the home screen. Low battery indication is 
shown on the initial screen. If you receive this error during an 
installation, change the batteries before trying again. 

Invalid Signature or Certificate 

Either this calculator does not have a certificate to run the 
application, or electrical interference caused a link to fail. Try to 
install the application again. 

Error in Xmit 

This problem is usually associated with the unit-to-unit cable and 
its connection between the calculators. Make sure the cable is 
firmly inserted in the link port of each calculator. 



TI-73 / TI-83 Plus Area Formulas Page 1 3 



Link Transmission Error 

This error indicates that the TI-GRAPH LINK™ software or 
Tl™ Connect software is unable to communicate with the 
calculator. The problem is usually associated with the 
TI-GRAPH LINK cable and its connection to the calculator or to 
the computer. 



• 



Make sure the cable is firmly inserted in the calculator's link 
port and the computer's serial or USB port. 

Verify that the correct cable type is selected in the software 
link settings. 

Verify that the correct communications port (Com Port) is 
selected in the software link settings. (This step does not 
apply if you are using the USB port and Tl Connect). 

If this does not correct the problem, try a different 
TI-GRAPH LINK cable and restart your computer. 



• 



TI-73 / TI-83 Plus Area Formulas Page 1 4 



Archive Full 

This error occurs when the TI-83 Plus does not have sufficient 
memory for the application. In order to make room for another 
application, you must delete an application or archived variables 
from the TI-83 Plus. Before you delete an application from the 
TI-83 Plus, you can save it on your computer using 
TI-GRAPH LINK™ software for the TI-83 Plus or Tl™ Connect 
software. You can reload it to the TI-83 Plus later using the 
TI-GRAPH LINK software or Tl Connect software. 

Memory Error 

This error occurs when the TI-73 does not have sufficient 
memory for the application. In order to make room for another 
application, you must delete an application from the TI-73. 
Before you delete an application from the TI-73, you can save it 
on your computer using TI-GRAPH LINK software for the TI-73 
or Tl Connect software. You can reload it to the TI-73 later using 
TI-GRAPH LINK software or Tl Connect software. 

Other Errors 

See Appendix B in the TI-73 manual or pages B-6 through B-1 
in the TI-83 Plus manual for information about the specific error. 

TI-73 / TI-83 Plus Area Formulas Page 1 5 



Checking Version Numbers and Free Space 

Verify Operating System Version and ID Number 

The Area Formulas application is compatible with TI-73 Graph 
Explorer software version 1 .50 and higher or the TI-83 Plus 
operating system 1.13 and higher. 

To verify your operating system version number: 

1 . From the home screen, press [2nd] [mem]. 

2. Select ABOUT. 

The operating system version number is displayed below the 
product name and has the format x.yy. The ID number appears 
on the line below the product number. 



TI-73 / TI-83 Plus Area Formulas Page 1 6 



Verify Flash Application Version 

The version number appears on the information screen below 
the application name. To display the information screen, do one 
of the following: 

• Press IAPPSI , and then select AreaForm. 
— or — 

• Select INFO from the application's main menu. 

Check Amount of Flash Application Free Space 

TI-73 

1 . From the home screen, press [2nd] [mem]. 

2. Select Check Apps. 

The Area Formulas application requires one free space to load 
the application. 

For more information about memory and memory management, 
refer to the TI-73 manual. 



TI-73 / TI-83 Plus Area Formulas Page 1 7 



TI-83 Plus 

1 . From the home screen, press [2nd] [mem]. 

2. Select Mem Mgmt/Del. 

The Area Formulas application requires at least 16,535 bytes of 
ARC FREE (Flash), or one space, to load the application. 

For more information about memory and memory management, 
refer to the TI-83 Plus manual. 



TI-73 / TI-83 Plus Area Formulas Page 1 8 



CONCEPT APPLICATION EVALUATION 
LICENSE AGREEMENT 

(Including Preview, Prototype, and Demo Apps) 

BY DOWNLOADING THE SOFTWARE AND/OR DOCUMENTATION YOU AGREE TO ABIDE BY 
THE FOLLOWING PROVISIONS. 

1. LICENSE: Texas Instruments Incorporated ("Tl") grants you a license to use and copy the 
software program(s) ("License Materials") contained on this diskette/CD/web site. You, and any 
subsequent user, may only use the Licensed Materials on Texas Instruments calculator 
products. 

2. RESTRICTIONS: You may not reverse-assemble or reverse-compile the Licensed Materials. 
You may not sell, rent, or lease copies that you make. 

3. COPYRIGHT: The Licensed Materials are copyrighted by Tl or the third party licensor. Licensee 
agrees that he/she will not delete the copyright notice, trademarks or protective notices from the 
Licensed Materials or copies made during installation. 

4. SUPPORT: The Licensed Materials are provided by Tl with the understanding that only limited 
support for this concept application may be available from Tl. 

5. TESTING: Licensee acknowledges that he/she understands that Tl has not in all cases 
subjected concept applications to rigorous testing and that the concept application may cause 
problems with his/her calculator, including its use in any kind of shared environment. Further, it 
is possible for a concept application to cause calculator crashes or lock ups which may be 
difficult to recover from. You are advised that use of the concept application is AT YOUR OWN 
RISK. 

6. WARRANTY: Tl does not warrant that the Licensed Materials will be free from errors or will 
meet your specific requirements. 

THE LICENSED MATERIALS ARE MADE AVAILABLE "AS IS" TO LICENSEE. 



TI-73 / TI-83 Plus Area Formulas Page 1 9 



7. LIMITATIONS: Tl MAKES NO WARRANTY OR CONDITION, EITHER EXPRESS OR 
IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTIES OF 
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, REGARDING THE 
LICENSED MATERIALS. 

IN NO EVENT SHALL Tl, ANY THIRD PARTY LICENSOR, OR TI'S SUPPLIERS BE LIABLE 
FOR ANY INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS, 
LOSS OF USE OR DATA, OR INTERRUPTION OF BUSINESS, WHETHER THE ALLEGED 
DAMAGES ARE LABELED IN TORT, CONTRACT OR INDEMNITY. 

SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR 
CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION MAY NOT APPLY. 

8. RESTRICTED RIGHTS: The Licensed Materials are provided with Restricted Rights. Use, 
duplication or disclosure by the United States Government is subject to restrictions as set forth 
in subparagraph [c](1)(ii) of the Rights in Technical Data and Computer Software clause at 
DFARS 252.227-7013 or in subparagraph [c](1) and (2) of the Commercial Computer Software - 
Restricted Rights at 48 CFR 52.227-19, as applicable. 



TI-73 / TI-83 Plus Area Formulas Page 20 



Page Reference 

This PDF document contains electronic bookmarks designed for easy on- 
screen navigation. If you decide to print this document, please use the page 
numbers below to find specific topics. 

Important Information 2 

What is the Area Formulas Application? 3 

What You Need 4 

Whereto Find Installation Instructions 5 

Getting Help 5 

Starting and Quitting the Application 6 

Using On-screen Options 7 

Viewing Definitions, Formulas, and Examples 8 

Taking the Quiz 10 

Deleting the Application from Your Calculator 12 

Installation Error Messages 13 

Checking Version Numbers and Free Space 16 

CONCEPT APPLICATION EVALUATION LICENSE AGREEMENT 19 



TI-73 / TI-83 Plus Area Formulas Page 21