Texas Instruments TI-30X - IIS Scientific Calculator User manual

Front
11”
8.5”
TI-30X II

TI-30XÚ S:
AGuideforTeachers
Developed by
Texas Instruments Incorporated
Activities developed by
Gary Hanson and Aletha Paskett
Illustrated by
Jay Garrison

© 1999 TEXAS INSTRUMENTS INCORPORATED TI-30X ÙS: A Guide for Teachers ii
About the Authors
GaryHanson and AlethaPaskett aremathteachersintheJordanIndependentSchoolDistrict
inSandy,Utah.TheydevelopedtheActivitiessectionandassisted inevaluatingthe
appropriatenessoftheexamplesintheHowtoUsethe TI-30X Ö Ssectionofthisguide.
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not be liable for any claim of any kind whatsoever against the use of these materials by any other party.
Note: Using calculators other than the TI-30X IIS may produce results different from those described in these materials.
Permission To Reprint or Photocopy
Permission is hereby granted to teachers to reprint or photocopy in classroom, workshop, or seminar quantities, the pages or sheets
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Copyright © 1999 Texas Instruments Incorporated.
Except for the specific rights granted herein, all rights are reserved.
Printed in the United States of America.
Automatic Power Down, APD, and EOS are trademarks of Texas Instruments Incorporated.


© 1999 TEXAS INSTRUMENTS INCORPORATED TI-30X IIS: A Guide for Teachers iii
How the Teacher Guide is Organized
This guide consists of two sections: Activities
and How to Use the TI-30X ÙS. The Activities
section is a collection of activities for
integrating the TI-30X ÙS into mathematics
instruction. The How To Use the TI-30X ÙS
section is designed to help you teach students
how to use the calculator.
Activities
The activities are designed to be teacher-
directed. They are intended to help develop
mathematical concepts while incorporating the
TI-30X ÙS as a teaching tool. Each activity is
self-contained and includes the following:
• An overview of the mathematical purpose
of the activity.
• The mathematical concepts being
developed.
• The materials needed to perform the
activity.
• The detailed procedure, including step-by-
step TI-30X ÙS key presses.
• A student activity sheet.
How to Use the TI-30X ÚS
This section contains examples on
transparency masters. Chapters are numbered
and include the following.
• An introductory page describing the
calculator keys presented in the example,
the location of those keys on the
TI-30X ÙS, and any pertinent notes about
their functions.
• Transparency masters following the
introductory page provide examples of
practical applications of the key(s) being
discussed. The key(s) being discussed are
circled on the TI-30X ÙS keyboard.
Things to Keep in Mind
• While many of the examples on the
transparency masters may be used to
develop mathematical concepts, they were
not designed specifically for that purpose.
• For maximum flexibility, each example and
activity is independent of the others.
Select the transparency master
appropriate for the key you are teaching, or
select the activity appropriate for the
mathematical concept you are teaching.
• If an example does not seem appropriate
for your curriculum or grade level, use it to
teach the function of a key (or keys), and
then provide relevant examples of your own.
• To ensure that everyone starts at the
same point, have students reset the
calculator by pressing &and -
simultaneously or by pressing %
and then selecting Y(yes).
Conventions Used in the Teacher Guide
• In the text, brackets [ ] around a key’s
symbol/name indicate that the key is a
second, or alternate, function.
For example: Z
• On the transparency masters, second
functions are shown just as they appear on
the keyboard.
For example: 
How to Order Additional Teacher Guides
To place an order or to request information
about Texas Instruments (TI) calculators,
use our e-mail address: [email protected]
visit our TI calculator home page: www.ti.com/calc
or, call our toll-free number:
1-800-TI-CARES (1-800-842-2737)
About the Teacher Guide

© 1999 TEXAS INSTRUMENTS INCORPORATED TI-30X
ÙS: A Guide for Teachers iv
Two-Line Display
The first line (entry line) displays an entry of up
to 88 digits (47 digits for the stat and
constant entry lines). Entries begin on the left;
those with more than 11 digits scroll to the
right. Press !and "to scroll the entry line.
Press %!or %"to move the cursor
immediately to the beginning or end of the
entry.
The second line (result line) displays a result of
up to 10 digits, plus a decimal point, negative
sign, x10 indicator, and 2-digit positive or
negative exponent. Results that exceed the
digit limit are displayed in scientific notation.
Display Indicators
Refer to Appendix B for a list of the display
indicators.
Order of Operations
The TI-30X ÙS uses the Equation Operating
System (EOSTM) to evaluate expressions. The
operation priorities are listed on the
transparency master in Chapter 4, Order of
Operations and Parentheses (page 41).
Because operations inside parentheses are
performed first, you can use DEto change
the order of operations and, therefore, change
the result.
2nd Functions
Pressing %displays the 2nd indicator, and
then accesses the function printed above the
next key pressed. For example, %b25 E
<calculates the square root of 25 and
returns the result, 5.
Menus
Certain TI-30X ÙS keys display menus:
z, %h, L, %t, u,
%w, H, I, %k, =
%d, %‚and %.
Press !or "to move the cursor and
underline a menu item. To return to the
previous screen without selecting the item,
press -. To select a menu item:
• Press <while the item is underlined, or
• For menu items followed by an argument
value (for example, nPr), enter the value
while the item is underlined. The item and
the argument value are displayed on the
previous screen.
Previous Entries # $
After an expression is evaluated, use #and
$to scroll through previous entries, which are
stored in the TI-30X ÙS history. You cannot
retrieve previous entries while in STAT mode.
Error Messages
Refer to Appendix C for a listing of the error
messages.
Last Answer ( Ans)
The most recently calculated result is stored
to the variable Ans. Ans is retained in memory,
even after the TI-30X ÙS is turned off. To
recall the value of Ans:
• Press %i(Ans displays on the
screen), or
• Press any operation key (T, U, etc.) as
the first part of an entry. Ans and the
operator are both displayed.
About the TI
-30XÚ S

© 1999 TEXAS INSTRUMENTS INCORPORATED TI-30X ÙS: A Guide for Teachers v
Resetting the TI-30X Ú S
Pressing &and -simultaneously or
pressing %and then selecting Y(yes)
resets the calculator.
Resetting the calculator:
• Returns settings to their defaults—
standard notation (floating decimal) and
degree (DEG) mode.
• Clears memory variables, pending
operations, entries in history, statistical
data, constants, and Ans (Last Answer).
Note: The examples on the transparency
masters assume all default settings.
Automatic Power Downé (APDé )
If the TI-30X ÙS remains inactive for about
5 minutes, APD turns it off automatically.
Press &after APD. The display, pending
operations, settings, and memory are retained.
About the TI
-30XÚ S
(Continued)

Table of Contents 
© 1999 TEXAS INSTRUMENTS INCORPORATED TI-30X ÙS: A Guide for Teachers vi
About the Authors ii
About the Teacher Guide iii
About the TI-30X ÖSiv
Activities
The Better Batter —
The FIX Key 2
Star Voyage —
Scientific Notation 6
Trig Functions 10
What’s My Score —
1-Variable Statistics 14
Heart Rates —
1-Variable Statistics 17
WNBA Stats —
2-Variable Statistics 23
How to Use the TI-30X ÚS
1 TI-30X ÖS Basic Operations 29
2 Clear, Insert, and Delete 33
3 Basic Math 36
4 Order of Operations and
Parentheses 40
5 Constant 43
6 Decimals and Decimal Places 45
7 Memory 47
8 Fractions 52
9Pi 58
How to Use the TI-30X ÚS(Continued)
10 Powers, Roots, and Reciprocals 61
11 Probability 68
12 Statistics 75
13 Trigonometry 81
14 Notation 88
15 Logarithms and Antilogarithms 91
16 Angle Settings and Conversions 94
17 Polar and Rectangular
Conversions 98
18 Hyperbolics 100
Appendix A A-1
Quick Reference to Keys
Appendix B B-1
Display Indicators
Appendix C C-1
Error Messages
Appendix D D-1
Support and Service Information
Appendix E E-1
Warranty Information

© 1999 TEXAS INSTRUMENTS INCORPORATED TI-30X ÙS: A Guide for Teachers 1
The Better Batter —
The FIX Key 2
Star Voyage —
Scientific Notation 6
Trig Functions 10
What’s My Score? —
1-Variable Statistics 14
Heart Rates —
1-Variable Statistics 17
WNBA Stats —
2-Variable Statistics 23
Activities

© 1999 TEXAS INSTRUMENTS INCORPORATED TI-30X ÙS: A Guide for Teachers 2
Overview
Students use %‚on the TI-30X ÙS to change
numbers to different place values. Students calculate
batting averages using the TI-30X ÙS and then round
their answers to 3 decimal places.
Math Concepts
• rounding
• place value
• division
• comparing and
orderingdecimals
Materials
• TI-30X ÙS
• pencil
• student
activity
Introduction
1. Have students practice rounding the following
numbers to 3 decimal places using pencil and
paper.
a. 2.35647 2.356
b. 15.3633 15.363
c. 0.02698 0.027
2. Have students round the following numbers to
4 decimal places using the TI-30X ÖS.
a. 4.39865 4.3987
b. 72.965912 72.9659
c. 0.29516 0.2952
d. 0.00395 0.0040
Activity
Present the following problem to students:
You are going to play Virtual Baseball. You need to
select 9 players from the list to be on your team.
Choose the players with the best batting averages.
Find the batting averages (number of hits
¾
number
of times at bat) rounded to 3 decimal places for each
player. Make a list of your players in order, from
highest to lowest.
See the table on page 3 for solutions.
³1. Enter the first number.
4.39865
2. Press %‚to display
the menu that lets you set
the number of decimal
places.
F0123456789
3. Press 4to select 4
decimal places.
4.39865
4. Press <.
4.39865
4.3987
The Better Batter — The FIX Key

© 1999 TEXAS INSTRUMENTS INCORPORATED TI-30X ÙS: A Guide for Teachers 3
Player Number of Hits Number of
Times at Bat Batting Average
C. Ripken 122 368 0.332
Puckett 119 363 0.328
Molitor 119 364 0.327
Greenwell 104 334 0.311
Tartabull 103 311 0.331
Palmeiro 120 366 0.328
Franco 109 344 0.317
Joyner 105 338 0.311
Boggs 106 329 0.322
Baines 91 290 0.314
Sax 113 388 0.291
Williams 20 74 0.270
Sheridan 15 63 0.238
Barfield 64 284 0.225
Mattingly 109 367 0.297
Hall 87 280 0.311
The Better Batter — The FIX Key (Continued)