Texas Instruments TI15TK Teacher Guide - Page 34

© 2000

T

EXAS

I

NSTRUMENTS

I

NCORPORATED

TI-15: A Guide for Teachers

27

In the Range

Name

___________________________

Date

___________________________

Collecting and Organizing Data

Have your partner secretly enter a measurement with three decimals places

into the calculator, and then fix the number to be rounded to the nearest whole

number. Now look at the display and answer the following questions:

1.

What is the measurement to the nearest meter? _________________

a.

What could be the range of the measurement if it had been

measured to the nearest tenth of a meter (decimeters)?

_______________________________________________________________________

b. Set

Š

to the nearest tenth (

˜

).

What is the measurement to the nearest tenth? _______________

Is that within the range you identified? ______________________

2.

What is the measurement to the nearest tenth of a meter? ________

a.


measured to the nearest hundredth of a meter (centimeters)?

_______________________________________________________________________

b. Set

Š

to the nearest hundredth (

™

).

What is the measurement to the nearest hundredth? __________


3.

What is the measurement to the nearest hundredth of a meter? ___

a.


measured to the nearest thousandth of a meter (millimeters)?

_______________________________________________________________________

b. Set

Š

to the nearest thousandth (

š

).

What is the measurement to the nearest thousandth? _________


Section	Page
Front Matter	1
Title Page	2
Table of Contents	4
About the Teacher Guide	5
About the TI.15	6
Activities	8
Patterns in Percent	9
Fraction Forms	13
Comparing Costs	18
Number Shorthand: Scientific Notation	22
Related Procedures	27
In the Range	31
The Value of Place Value	36
What’s the Problem?	41
How to Use the TI-15	45
1: Display, Scrolling, Order of Operations, and Parentheses	46
Equation Operating System	47
Order of Operations	48
2:Clearing and Correcting	49
Clearing entries	50
Correcting entry errors	51
3: Mode Menus	52
4: Basic Operations	55
Entering negative numbers	57
Division with remainders	58
Division with decimal result	59
Division with fractional result	60
Calculating equivalent units of time	61
5: Constant Operations	62
Addition as “counting on”	63
Multiplication as “repeated addition”	64
Powers as “repeated multiplication”	66
Using [^] as a constant	67
Using OP 1 and OP 2 together	68
Clearing constant operations	69
6: Whole Numbers and Decimals	70
Setting the number of decimal places	72
Addition with money	73
Converting decimals to fractions	74
7: Memory	75
Using memory to add products	76
Using memory to find averages	77
8: Fractions	78
Adding mixed numbers	80
Simplifying fractions	81
Converting fractions to decimals	83
Converting decimals to fractions	84
Conv e r t i ng between fractions and mixed numbers	85
Comparing fractions and decimals	86
9: Percent	87
Converting with percent	88
Conver ti ng with fractions, decimals, and percent	89
Calculating tips	90
10: Pi	91
Using pi to find circumference	92
Using pi to find area	93
Using pi to find volume	94
11: Powers and Square Roots	95
Finding the area of a square	96
Finding the square root	97
Calculating powers	98
Calculating negative powers	99
Using powers of 10	100
12: Problem Solving: Auto Mode	101
Select level of difficulty	102
Select type of operation	103
Test your skills	104
View the Scoreboard	105
Find the operator	106
13: Problem Solving: Manual Mode	107
Problems with one solution	108
Problems with more than one solution	109
Problems with no solution	110
Less than, greater than, equals	111
View Scoreboard	112
14: Place Value	113
Determine place value	115
Repeated digits	116
How many?	117
What’s the digit?	118
Appendices	119
A: Quick Reference to Keys	119
B: Display Indicators	123
C: Error Messages	124

Texas Instruments TI15TK Teacher Guide - Page 34

into the calculator, and then fix the number to be rounded to the nearest whole

Page 34 highlights