Texas Instruments TI-73 Explorer Manual

9/17/02 © 2002 Texas Instruments
TI-73 / TI-83 Plus
SMILE Mathematics
Getting Started
Starting and Quitting the Application
How To…
Play the Minimax Game
Play the Box Game
Play the Matching Fractions Game
Play the Angle Game
Play the Rhino Game
More Information
Use On-screen Options and Menus
Delete the Application
Installation Error Messages
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 Mac are registered trademarks of their
respective owners.
Each game was developed by SMILE Mathematics of London, England. For further
information about the SMILE Mathematics software, visit their web site at
www.smilemathematics.co.uk
©2000 SMILE Mathematics

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What is the SMILE Mathematics Application?
The SMILE Mathematics application is a suite of five games:
•Minimax
•Box
•Matching Fractions
•Angle
•Rhino
Concept App
Concept applications are shared with our customers, educators,
and students before product definition and testing is complete.
These applications may contain software imperfections and/or
incomplete coding areas. They are “alpha” software versions.
TI invites feedback from teachers and students concerning the
functionality and educational value of the SMILE Mathematics App.
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®
Mac® 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 supported 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 Apps are available
at education.ti.com/guides.Follow the link to Flash Installation
Instructions.
Note The instructions in this guidebook are only for this App. If you need help
using the TI-73 or TI-83 Plus, refer to its comprehensive guidebook at
education.ti.com/guides.

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Starting and Quitting the Application
Starting the Application
1. Press Œto display the list of applications on your device.
2. Select SMILEMth.The SMILE Mathematics information screen is
displayed.
3. Press any key to continue. The Texas Instruments version
number screen is displayed.
4. Press any key to continue. The programmers’ screen is
displayed.
5. Press any key to continue. The acknowledgement screen is
displayed.
6. Press any key to continue. The SELECT A GAME menu is
displayed.
7. Select a game and press Í.
Also on this screen are two choices QUIT and INFO.Select
QUIT (o)if you need to quit the application. Select INFO (s)
to rerun the information screens.
Quitting the Application
Select QUIT or press y 5 from the SELECT A GAME menu.

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Navigating
Selecting Menu Items
You can select menu items in the following ways.
•Press }or †to highlight the menu item, and then press Í
to select it.
— or —
•Press the number key that corresponds to the menu item.
Using On-Screen Options
To select an option from the bottom of the screen, press the
graphing key directly below the option.
For example, press
sto rerun the
information screens.
o
p
q
r
s

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he Minimax Game
Minimax is a game for two players. Five digits are presented, one at
atime, and used to create a three-digit and a two-digit number.
Each presented digit can be placed in any available position, but
once placed, it cannot be moved.
Before any digits are presented, an operation (addition, subtraction,
multiplication, or division) is chosen, and also a target (minimum or
maximum). The aim for each player is to create the arrangement of
three-digit and two-digit numbers, combined according to the
chosen operation, which produces the better result according to the
chosen target, minimum or maximum.
For example, if addition and minimum are the chosen operation and
target, and the five presented digits are 4, 6, 9, 2, and 5, the
arrangement below of player AAA produces a better result than the
arrangement of player BBB.
Player AAA: 629 + 45 = 674
Player BBB: 954 + 26 = 980
(the lower value is 674, so AAA wins)

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Starting the Minimax Game
1. From the SELECT AN OPERATION menu, choose one of the
following:
1:ADDITION
2:SUBTRACTION
3:MULTIPLICATION
4:DIVISION
2. Then, from the SELECT A MODE menu choose:
1:MINIMUM NUMBER
2:MAXIMUM NUMBER
3. Next, from the INPUT PLAYER NAME screen, enter a three letter
identifier for each player.
Enter Player Names
Press }and †to cycle the display through the available letters, in
alphabetical order, and press |and ~to move the cursor between
the positions for each letter. When three letters have been chosen,
press Íto confirm your choice.
Three letters for the second player are entered in the same way,
and then the game automatically launches.

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Playing the Minimax Game
The opening screen looks similar to the illustration below.
Five spaces for digits are presented. Each player must try to place
the digits so that the final result is as high or low as possible. The
digits are presented one at a time, with those still to come unseen
until presented. The indicator mark is moved to the available
locations by pressing ~or |. Press Íto place the digit in the
location currently indicated by the marker position. The marker only
moves to available positions.
As each game ends the option to QUIT (o)the game or PLAY
AGAIN (p)is selected from the on-screen option at the
bottom of the screen.
The aim is to minimize
the result.
This box shows the
current digit to be placed.
This box identifies
the current player.
The chosen operation
is addition.
This mark indicates where
the digit is placed when
you press Í.
The current player’s
name is highlighted.

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A ition an Subtraction
If you chose 1:ADDITION or 2:SUBTRACTION,add or subtract the
numbers and enter the answer in the space provided. Below is an
example of an addition screen:
If either of the entered results is incorrect, the word WRONG
appears on screen to indicate the error. Press TRY AGAIN (r)
on-screen option and enter a new answer for that calculation. You
have three chances to input the correct answer before the correct
answer is displayed.
Indicates wrong result.

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Once the entered results are correct, the winner or a draw is
declared.
Multiplication an Division
After choosing 3:MULTIPLICATION or 4:DIVISION,you are then asked
to select MINIMUM NUMBER (smaller) or MAXIMUM NUMBER (bigger)
by pressing }or †.Press Íto confirm your selection. Once all
the values have been positioned, the result is automatically calculated
for you. You must then select the smaller or bigger result, depending
on whether you previously selected MINIMUM NUMBER or MAXIMUM
NUMBER.Press Íto confirm your selection.
If both players arrive at the same result, press the DRAW? (r)
option.
In this example,
Player AAA arrived
at the bigger result.
Winner is declared.
DRAW is declared.

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he Box Game
Box is a game based on the relative positions of values along a
number line.
Aplayer is presented with nine values, one at a time, each to be
placed into one of nine positions. Only one value can occupy each
position and once placed, a value cannot be moved. The position of
each value must represent its relative size, between the overall
highest and lowest values. If, when a value is presented, there is no
position available to maintain the required order, then the value is
discarded.
The game can be played by two players. Each player completes an
arrangement of the nine presented values. The player discarding
the fewest values (and hence, placing the most values) wins. In the
one-player game, the choices attributed to the second player are
made automatically by the application.
The game can be played using either integer values, decimal
values, or negative values, according to the options selected.

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Starting the Box Game
1. From the SELECT A BOX GAME menu choose one of the
following:
1:BOX (WHOLE NUMBERS)
2:BOXD (DECIMAL NUMBERS)
3:BOXN (NEGATIVE NUMBERS)
2. Next the SELECT A BOX MODE menu defines a range for the nine
values to be placed. For example, in 1:BOX (WHOLE
NUMBERS) choose either 1:0 TO 100 or 2:0 TO 1000.
3. Then from the NUMBER OF PLAYERS screen choose:
1:ONE PLAYER?
2:TWO PLAYERS?
4. From the INPUT PLAYER NAME screen, enter a three letter
identifier for each player.
Entering Player Names
Press }or †to cycle the display through the available letters, in
alphabetical order, and press |or ~to move the cursor between
the positions for each letter. When three letters have been chosen,
press Íto confirm your choice. The game automatically
launches.

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Playing the Box Game
The opening screen looks similar to the illustration below.
Nine numbers are presented. Try to place the numbers in order
with the highest at the top and the lowest at the bottom. The
numbers are presented one at a time with the numbers still to come
unseen until presented. The on-screen pointer is moved up or down
the available locations by pressing †and }. Press Íto place
the value in the location currently indicated by the pointer’s position.
If a value cannot be placed as required, press {to discard that
value.
Atally of the number of discarded values is shown under BIN on
the screen.
AAA is the name of
the first player and the
highlight indicates it is
this player’s turn.
BOX is the name of the second player. As this
is a one-player game the part of the second
player is taken automatically by the App.
54 is the number
currently presented.
First player AAA then
player BOX must select
one of these nine boxes
as a location for 54.
0TO 100 is a reminder of the possible range
of the nine presented values.
BIN shows the number
of values discarded.

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If you select a location which would not maintain the order as
required, a dialog box displays a message stating that the number
does not fall between the minimum and maximum numbers.
Pressing any key to acknowledge the message allows the game to
continue.
When all nine values have been presented, a message displays
stating how many of the values were correctly placed by each
player, and then identifies the winning player.
Pressing any key clears the message and the option to QUIT (o)
the game or PLAY AGAIN (p)is selected from the on-screen
options at the bottom of the screen.
Player AAA has discarded
1value to this point. When
the value 90 appeared, 82
had already been placed
in the top position,
therefore, 90 had to be
discarded.
The pointer indicates the position
where 18 is placed if
Íis pressed.
When the value 90
appeared, Player BOX
placed the value in the
top position.

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he Matching Fractions Game
The Matching Fractions game is based on the concept of
equivalence between fractions.
The aim of the Matching Fractions game is to identify the equivalent
fractions within a displayed set of four fractions. The fractions can
change to new values three times within each round. At the end of
each round your performance is reported as a score based on the
number of equivalent fractions successfully identified in each round.
The game ends after a total of five rounds have been played.
Example
The fractions 2/4 and 3/6 are equivalent fractions because they
both represent the same portions of a whole, which is one-half. The
first diagram below shows a bar divided into four equal parts
(quarters) with two of these parts shaded.
The second diagram shows the same bar divided into six equal
parts (sixths) this time with three of these parts shaded.

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The fractions 2/4 and 3/6 represent the same shaded portion of the
whole bar. The fractions 4/8, 5/10, 10/20, and 50/100 also
represent the same portion of a whole bar. There are an infinite
number of fractions that also belong to this set. Within this set of
possible fractions, all equivalent to each other, the fraction 1/2 is
the simplest form for any of the fractions in this set.
Viewing Help in Matching Fractions
Text screens provide help with the procedure and game features.
The screens advance when NEXT (s)is pressed and the
BACK (r)option allows earlier text to be reread.
The Help screens explain that:
•There are two levels of challenge, and that level one is the
easiest level.
•At any time, the display shows four sets of fractions.
•Press |or ~to highlight a displayed fraction, then press Í
to activate the selection.
•RESELECT produces new fraction values for all positions not
already selected. After you press RESELECT three times to see
four sets of fractions, the round ends.

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•There is an UNDO option which releases the first fraction chosen
so that it can be repositioned, if desired. Undo is not available
once a second fraction has been chosen.
•END GO displays the score for that round.
At the bottom of the final help screen, the DEMO (q)choice
launches a demonstration game sequence with a text commentary.
The demonstration pauses, to allow sufficient viewing time, and
continues when NEXT is pressed. Press QUIT DEMO (o)on the
last screen to move to the SELECT AN OPTION menu.
Starting the Matching Fractions Game
1. Select 2:MATCHING FRACTIONS from the SELECT AN OPTION
screen.
2. From the SELECT A LEVEL screen, choose LEVEL 1 or LEVEL 2,
depending on the degree of challenge required.
3. Next, from the INPUT PLAYER NAME screen enter three letters to
show as your identification during the game.

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Entering Player Names
Press }or †to cycle the display through the available letters, in
alphabetical order, and press |or ~to move between the
positions for each letter. When three letters have been chosen,
press Íto confirm your choice. The game then automatically
launches.
Playing the Matching Fractions Game
The opening screen looks similar to the illustration below.
General information is displayed on the right hand side of the
screen. This includes the round number, the set of fractions
reached within that round, the three letters identifying the player,
and the score so far this game.
Agame h
as 5 rounds, this
is Round 1.
Set 1 indicates that this is
the first set of fractions,
reselection has yet to take
place.
RESELECT
produces a new set of fractions.