Texas Instruments TI-73 Explorer Manual

10/8/02 © 2002 Texas Instruments
TI-73 / TI 83 Plus
Rational Number Rampage
Getting Started
Starting and Quitting the Application
How To…
Play Rational Timer
Play Rational Match
Play Percent Square
More Information
Getting Help
Deleting the Application
Error Recovery
Fractions Less than One
Percent Square Images
TI

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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.
Microsoft, Windows, Windows NT, Apple, and Macintosh are trademarks of their
respective owners.

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What is the Rational Number Rampage App?
The Rational Number Rampage App helps strengthen math skills
dealing with fractions, decimals, and percents. This application
contains three different games:
•Rational Timer challenges you to convert numbers to
fractions, decimals, or percents, and input your answer before
time runs out on the clock.
•Rational Match tests your memory as well as your math skills.
Sixteen cards are shown facedown. On the face of each is a
number in fraction, decimal, or percent form. For each of
these numbers, there is an equivalent representation on a
different card. You turn over two cards at a time, trying to
match all of the cards using the fewest tries possible.
•Percent Square shows numbers visually on the screen using
ahundreds square (10 by 10 grid). For each problem, a
different number of squares in the grid are shaded. You must
determine what portion the grid is shaded and enter the
answer in fraction, decimal, or percent form.
For assistance in playing Rational Number Rampage, see the
tables of equivalent values for fractions less than one and
challenging hundreds squares.

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The Rational Number Rampage 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 Rational Number Rampage application.
Please send your comments and questions to
[e-mail].

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What You Need
Note In this guidebook, any information that pertains to the TI-83 Plus also
pertains to the TI-83 Plus Silver Edition, unless otherwise noted.
Hardware and Software Note
TI-73 with version 1.60 or latest version
of the Graph Explorer software
—or —
TI-83 Plus or TI-83 Plus Silver Edition
with version 1.15 or latest version of
the operating system (OS) 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 Microsoft ® Windows®
95/98/2000, Windows NT®, or Apple®
MacIntosh® OS 7.1 or higher installed
TI-GRAPH LINK™ computer-to-device
cable If you do not have this cable, call
your distributor, or order the cable
from the TI online store.
TI Connect™ software, which works
with most models of Flash-based TI
graphing devices.
—or —
TI-GRAPH LINK software that is
compatible with the TI-73 or the
TI-83 Plus
You can download free copies of
TI Connect and TI-GRAPH LINK
software from
education.ti.com/softwareupdates.
Follow the link to Connectivity
Software.

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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.
For this application, help for each game is available from the
main menu and from the SELECT A LEVEL screen.
1. From the main menu, highlight the number of the game you
need help with and then select HELP (press s).
—or —
From the SELECT A LEVEL screen for the game, select HELP
(press s).
2. Select
NEXT (press s)to display subsequent screens of
help text.
3. Select
QUIT HELP (press o)to return to the main menu.

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Starting and Quitting the Application
Starting the Application
1. Press Œto display the list of applications on your TI-73 or
TI-83 Plus.
2. Select
RRampage.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 RATIONAL NUMBER RAMPAGE
menu is displayed.
Quitting the Application
From the RATIONAL NUMBER RAMPAGE menu, select QUIT or press
y 5.

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Na igating
Selecting Menu Items
You can select menu items in the following ways:
•Press }or †to highlight the menu item, and then press
Íto select it.
•Press the number key that corresponds to the menu item.
Using On-Screen Options
Each screen displays one or more options along the bottom of
the screen. To select an option, press the graphing key directly
below the option.
Note For the TI-73, you must use the on-screen option keys for UNIT,
n/d,and %. You CANNOT use device keys.
o
p
q
r
s
For example,
press sto
select %.

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Rational Timer
The game displays a fraction, decimal or percent inside the
clock. The format that the number should be converted to is
shown below the clock. Try to beat the clock, entering your
answer as quickly as possible. The faster you correctly answer
problems, the more points you score.
1. Select
RATIONAL TIMER from the main menu. The SELECT A
LEVEL screen is displayed.
2. Press }or †to move the cursor to the level you want to
play, and then press Íto select the level. The Rational
Timer game screen is displayed.
Level Description
Bronze The game contains fraction, decimal, and percent
representations of halves, thirds (equivalent fractions only),
fourths, fifths, sixths (equivalent fractions only), eighths, and
tenths. Numbers range between 0 and 1.
Silver The game contains fraction, decimal, and percent
representations of halves, thirds, fourths, fifths, sixths,
eighths, tenths, twelfths, and sixteenths. Numbers range
between 0 and 1.
Gold Same as Silver but numbers range between 0 and 2.
Note From the SELECT A LEVEL screen, you can see the high scores for
the game, by selecting HIGH.

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3. Press any key to display the first problem.
4. Input your answer, and then press Íto check your
answer. The message box displays WELL DONE! when your
answer is correct, or TIME OUT if you do not enter the correct
answer before time on the clock runs out.
Note If your answer is incorrect and you still have time left on the clock,
your answer is erased so that you can enter a new answer.
To input this type
of number… Do this:
Repeating decimal Input the decimal value, place the cursor on the
number that repeats, and then select BAR.
Example: 0.083 BAR "30.08
Fraction Input the numerator, select n/d,and then input the
denominator. All fractions must be in the simplest
form.
For this proble
m,
convert 0.125 to a
fraction.
Messages are
displayed here.
Enter your
answer here.

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To input this type
of number… Do this:
Mixed fraction Input the whole number, select UNIT,input the
numerator, select n/d,and then input the
denominator. Improper fractions are not accepted
as correct. Example: 160% "13
5not 8
5.
Percent Input the number, and then select %.
5. Press any key to display the next problem. After 10 problems,
the game is over.
6. If your score is a new high score, enter your initials;
otherwise, select PLAY AGAIN to play a new Rational Timer
game or select MENU to return to the main menu.
Scoring
Your score is calculated based on the level of play and the
number of tick marks left on the clock when you enter a correct
answer.
Level Points per Tick Mark
Bronze 1
Silver 2
Gold 3

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Rational Match
The game screen shows 16 cards facedown. On the face of
each card is a number in either fraction, decimal, or percent
form. Turn the cards over and determine whether the numbers
are equivalent. The object of the game is to match each card
with its equivalent card in as few moves as possible to get the
lowest score. Matched cards are removed from the game, but
unmatched cards are returned, facedown.
Tip The Silver and Gold levels can be challenging at first because
they can contain numbers that you might not be used to seeing
(e.g., representations of twelfths and sixteenths). You might want
to record the numbers in a 4x4 array as you play the game. After
playing these levels a few times, they will become more familiar.
For assistance in playing Rational Match, see the table of
equivalent values for fractions less than one.
1. Select RATIONAL MATCH from the main menu.
2. Press }or †to move the cursor to the level you want to
play, and then press Íto select the level. The Rational
Match game screen is displayed.

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Level Description
Bronze The game contains fraction, decimal, and percent representations
of halves, thirds, fourths, fifths, sixths, and eighths. Numbers range
between 0 and 1. All fractions are in the simplest form.
Silver The game contains fraction, decimal, and percent
representations of halves, thirds, fourths, fifths, sixths,
eighths, tenths, twelfths, and sixteenths. Numbers range
between 0 and 1.
Gold Same as Silver but numbers range between 0 and 2.
Note From the SELECT A LEVEL screen, you can see the low scores
for the game, by selecting LOW.
3. Press },†,|,or ~to move the cursor to a card, and then
select SHOW to see the face of the card.
4. Repeat step 3 to see the face of another card.

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5. Determine whether the numbers are equivalent, and then
select =if the numbers are equal or ≠if the numbers are not
equal. A message is displayed stating whether your answer is
correct or incorrect.
If the cards are equal, they are removed from the game. If
the cards are not equal, they are returned to the game and
placed facedown in the same positions where they were
previously.
6. Repeat steps 3–5 until all of the cards are gone.
7. If your score is a new low score, enter your initials;
otherwise, select PLAY AGAIN to play another Rational Match
game or MENU to return to the main menu.

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Scoring
The object of this game is to keep your score as low as possible.
There is no penalty on the first turn. After the first turn, points are
assessed as described in the following table.
Cards are equal and
your answer is Cards are not equal and your answer is
Level = ≠
≠≠≠=≠
≠≠≠
Bronze 0 6 6 3
Silver 0 4 4 2
Gold 0 2 2 1

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Percent Square
Either one or two hundreds squares are displayed on the screen
depending on the level and problem. Each hundreds square has
some of its squares shaded. A message is displayed telling you
to answer what fraction, decimal, or percent of the squares are
shaded.
Tip For assistance in playing Percent Square, see the table of
equivalent values for challenging hundreds squares.
1. Select PERCENT SQUARE from the main menu. The SELECT A
LEVEL screen is displayed.
2. Press }or †to move the cursor to the level you want to
play, and then press Íto select the level. The Percent
Square game screen is displayed.
Level Description
Silver The game contains fractions, decimals, and percents from
0through 1.
Gold The game contains fractions, decimals, and percents from
0through 2.
Note From the SELECT A LEVEL screen, you can also see
•an animated demonstration of the game by selecting DEMO.
•the high scores for the game by selecting HIGH.

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3. Press any key to start the game. Part of the hundreds square
is shaded, and a message tells you in what form your answer
should appear.
4. Input your answer, and then press Íto check it. If your
first answer is incorrect, you can try again. If your final
answer is incorrect, the correct answer is displayed.
To input this type
of number… Do this:
Fraction Input the numerator, select n/d,and then input the
denominator. All fractions must be in the simplest
form.
Mixed fraction Input the whole number, select UNIT,input the
numerator, select n/d,and then input the
denominator. Improper fractions are not accepted
as correct. Example: 160% "13
5not 8
5.
Percent Input the number, and then select %.
A
nswer box
Hundreds
square = 1 unit
For this problem,
give the answer
in fraction form
(simplest terms).

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5. Press any key to display the next problem. After you answer
10 problems, the game is over.
6. If your score is a new high score, enter your initials;
otherwise, select PLAY AGAIN to play another Percent
Square game or select MENU to return to the main menu.
Scoring
Your score is calculated based on the level of play and whether
the answer was correct on the first try.
Correct Answer
Level First Try Second Try
Silver 10 pts 5 pts
Gold 20 pts 10 pts

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Entering Initials in the High / Low Score Table
When you reach a high or low score, you can enter your initials
in the score table. The initials displayed are AAA until you
change them.
1. Press }and †to cycle the display through the available
letters, in alphabetical order.
2. Press |and ~to move the cursor between the positions for
each letter.
3. Press Íto confirm your input.
Your initials and your points are added to the score table.

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Deleting the Application
TI-73
1. Quit the App.
2. Press y L to display the MEMORY menu.
3. Select
Delete.
4. Select
Apps.
5. Move the cursor to RRampage.
6. Press Í. A confirmation message is displayed.
7. Select
Yes to delete the application.
TI-83 Plus
1. Quit the App.
2. Press y L to display the MEMORY menu.
3. Select
Mem Mgmt/Del.
4. Select
Apps.
5. Move the cursor to RRampage.
6. Press {. A confirmation message is displayed.
7. Select
Yes to delete the application.