Texas Instruments TI-34 II Teachers Guide - Page 12

Star Voyage-Scientific Notation

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Star Voyage-Scientific Notation Overview Students investigate scientific notation by changing numbers into scientific notation, and then using them in calculations. Math Concepts • scientific notation • addition • division Materials • TI-34 Û • pencil • student activity (page 8) Introduction Set up the activity by telling your students: The standard form for scientific notation is a Q 10n, where a is greater than or equal to 1 and less than 10, and n is an integer. 1. Have students practice writing the following numbers in scientific notation using pencil and paper. a. 93 000 000 b. 384 000 000 000 c. 0.00000000000234 d. 0.0000000157 9.3 Q 107 3.84 Q 1011 2.34 Q 10-12 1.57 Q 10-8 2. Have students change the following numbers into scientific notation using the TI-34 Ö. a. 12 000 000 000 000 b. 974 000 000 000 c. 0.0000000000034 d. 0.00000000004 1.2 Q 1013 9.74 Q 1011 3.4 Q 10-12 4 Q 10-11 3. Have students change the following numbers into floating decimal (standard notation). a. 5.8 Q 107 b. 7.32 Q 105 c. 6.2 Q 10-6 d. 3 Q 10-8 58 000 000 732 000 0.0000062 0.00000003  1. Enter the first number. ¸0000000000 2. Press < to display the number in scientific notation. 1. 2x1013 ³ 1. Enter 5.8 and press C. 5.8¯ 2. Enter 7 and press

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© 1999 T
EXAS
I
NSTRUMENTS INCORPORATED
TI
-
34
Û
: A Guide for Teachers
6
Star Voyage—Scientific Notation
Overview
Students investigate scientific notation by changing
numbers into scientific notation, and then using
them in calculations.
Math Concepts
• scientific
notation
• addition
• division
Materials
• TI
-
34
Û
• pencil
• student activity
(page 8)
Introduction
Set up the activity by telling your students:
The standard form for scientific notation is
a
Q
10
n
,
where a is greater than or equal to 1 and less than
10, and n is an integer.
1.
Have students practice writing the following
numbers in scientific notation using pencil and
paper.
a.
93 000 000
9.3
Q
10
7
b.
384 000 000 000
3.84
Q
10
11
c.
0.00000000000234
2.34
Q
10
-12
d.
0.0000000157
1.57
Q
10
-8
2.
Have students change the following numbers into
scientific notation using the TI
-
34
Ö
.
a.
12 000 000 000 000
1.2
Q
10
13
b.
974 000 000 000
9.74
Q
10
11
c.
0.0000000000034
3.4
Q
10
-12
d.
0.00000000004
4
Q
10
-11
3.
Have students change the following numbers into
floating decimal (standard notation).
a.
5.8
Q
10
7
58 000 000
b.
7.32
Q
10
5
732 000
c.
6.2
Q
10
-6
0.0000062
d.
3
Q
10
-8
0.00000003
±
1.
Enter the first number.
¸
0000000000
2.
Press
<
to display the
number in scientific
notation.
1. 2
x10
13
³
1.
Enter
5.8
and press
C
.
5.8
¯
2.
Enter
7
and press
<
.
5.8
¯
7
58000000.
Note:
To enter a negative
number, press
M
and then
enter the number.