Texas Instruments TI-73VSC Teachers Guide - Page 48

Wrap-up for Part

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Measurement and Geometry 43 Activity 8: Drip, Drip, Drip 11. View and trace the graph. * ) ! or " to trace until X=0 Ask: What is the value of Y? What does this point represent? (When time = 0, there is no water.) 12. Now look at this same information in a table. - f (above the ' key) The screen should look like the one at the right. - i (above the * key) 13. Scroll down (#) in the X column to 24. Ask: What is in the Y1 column? What does this value mean? Is this the same amount of water that you calculated on the Home screen for 1 day? Á If you want to go directly to X=24, set your table start (TblStart) to 24 on the TABLE SETUP screen (- f). Wrap-up for Part A ♦ Using the table, have students answer these questions. How much water would be wasted if the drip continued over a weekend? How much water would be wasted over the Christmas holiday? How much water would be wasted in a year? How long would it take to fill our classroom with water? ♦ Make sure students have completed their activity sheets. © 1998 TEXAS INSTRUMENTS INCORPORATED

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Measurement and Geometry
Activity 8: Drip, Drip, Drip
43
© 1998 T
EXAS
I
NSTRUMENTS
I
NCORPORATED
11. View and trace the graph.
*
)
!
or
"
to trace until
X=0
Ask:
What is the value of Y? What does this point
represent?
(When time = 0, there is no water.)
12. Now look at this same information in a table.
-
f
(above the
'
key)
The screen should look like the one at the right.
-
i
(above the
*
key)
13. Scroll down (
#
) in the
X
column to
24
.
Ask:
What is in the
Y
1
column?
What does this value mean?
Is this the same amount of water that you calculated
on the Home screen for 1 day?
If you want to go directly
to X=24, set your table
start (
TblStart
) to 24 on
the
TABLE SETUP
screen
(
-
f
).
Wrap-up for Part A
♦
Using the table, have students answer these questions.
How much water would be wasted if the drip
continued over a weekend?
How much water would be wasted over the Christmas
holiday?
How much water would be wasted in a year?
How long would it take to fill our classroom with
water?
♦
Make sure students have completed their activity
sheets.