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Activity 6: Major Martian Headache
33
© 1998 T
EXAS
I
NSTRUMENTS
I
NCORPORATED
4. Guide students to see that the rule for making antenna
muffs is heads
¦
2 = number of antenna muffs. Show
students how this also can be written as X
¦
2 =Y.
5. Ask students: If there are 67 Martians in a
community, how many antenna muffs would be
needed?
➪
The TI-73 displays the
multiplication symbol as an
asterisk
¦
.
6. On the TI-73, enter X
¦
2 =Y into the Y= editor.
& I M Z
7. Explore for any given Martian community size by first
setting up a table of values.
a. Access the
TABLE SETUP
screen.
- f (above the ' key)
b. Make sure the screen looks like the one shown at
the right (
TblStart=0, @Tbl=1, Indpnt: Auto, Depend:
Auto
).
8. Show on the TI-73 a table of values for the equation.
- i (above the * key)
9. Move around on the table and find the number of
antenna muffs needed for a community of 67 Martians.
$ and #
10. To find the number of antennas for even larger
communities, go back to the
TABLE SETUP
screen and
change
TblStart
to a larger amount, such as 1000.
- f
11. Display the table.
- i