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Number Sense
Activity 3: How Do You Measure Up?
11
© 1998 T
EXAS
I
NSTRUMENTS
I
NCORPORATED
Activity
—
Part B
In this part, students discover the ratio of the average
height of a student to the average length of an intestine.
Have students perform the steps unless otherwise
indicated.
1. Measure height in centimeters or inches.
2. Enter the data in
L
2
.
a. Display the List editor.
3
b. If necessary, clear
L
2
.
$ to highlight
L
2
: b
c. Enter the heights in
L
2
. Press b after each list
item.
3. Find the average height on the Home screen using the
mean
function.
a. Return to the Home screen.
- l
b. Access the
MATH
menu and select
mean
.
- v " " [
c. Calculate the mean.
- v Z E b
4. Compare the average height to intestine length as a
ratio.
Wrap-up
Ask students: How many average students would it take
to make the length of an average intestine?