Texas Instruments TI-83 Plus Silver Edition User manual

USA TODAY Math TODAY: The New Color of Money 1
TI Technology Guide for Math TODAY version of The New
Color of Money
TI-83 Plus and TI-83 Plus Silver Edition
Converting Units of Measure Using Science Tools App
This activity utilizes the basic computation
capabilities of the handheld in decimal and scientific
notation. Use the zkey to display the screen
shown at the right. You may change to displaying
answers in scientific notation by highlighting Sci on
the top line of the screen and pressing b. You
may return to decimal notation by highlighting
Normal and pressing b.
To use the unit conversion capabilities of the
Science Tools App, press the Œkey, highlight
SciTools and press b.
On the SELECT A TOOL menu screen, select
2:UNIT CONVERTER. Notice on this screen that
there is an EXIT option on the bottom of the screen.
To exercise this option, you must press o. To exit
from within the application you will use y[QUIT]
repeatedly until this screen is displayed, then press
o.
In Step 3, select 1:LENGTH.
©
2003 Texas Instruments Incorporated

USA TODAY Math TODAY: The New Color of Money 2
Enter the number of inches high that the stack of $20
bills would be and highlight in for inches on the
screen. Then press b.
Notice that the number of inches is listed in scientific
notation with the units shown. Highlight the units of
measure to which inches are being converted—mi
for miles. Press bagain.
The height of the stack is shown in scientific notation
as miles. In this case, since the original data is
accurate to only 2 significant digits, this result should
also be expressed to 2 significant digits of
accuracy—3.5 x 102(or 350) miles.
The solution can be exported outside the App to the
handheld home screen by pressing qto select
the EXPT option from the bottom of the screen.
In Step 4, the number of cubic inches in 1 cubic foot
can be found easily. Then exit the program to find
the volume of all the $20 bills in cubic inches before
returning to the converter to find the volume in cubic
feet.
©
2003 Texas Instruments Incorporated