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26
Using the TI-73: A Guide for Teachers
Patterns and
Functions
© 1998 T
EXAS
I
NSTRUMENTS
I
NCORPORATED
4. Have students set up the counter for the second
scenario.
- t # #, and then " until
{
b
Y ¡ Z " to
}
b
# # to
Done
b b
- t # #, and then " until
{
b
# # to
Done
b
- ¢ (above the a key)
D Y E \ Y ¡
- ¢ D Z E \ Z
- t # #, and then " until
}
b
# # to
Done
b b
➪
{}
indicates a list of
numbers.
➪
Ans(1)
means the answer
in the first position of the
list and
Ans(2)
means the
answer in the second
position of the list.
Ans(1) +1
will count up by
ones to let you know which
term you are on, while
Ans(2)+2
is the familiar
pattern you use to find the
number of blocks each
tower will have.
Activity
—
Part C
1. Now the twins move to bigger things. Try this next
pattern with the counter.
1-story tower
2-story tower
3-story tower
2. Have students set up the counter.
- t # #, and then " until
{
b
Y ¡ R " to
}
b
# # to
Done
b b
- t # #, and then " until
{
b
# # to
Done
b
- ¢
(above the a key)
D Y E \ Y ¡
- ¢
D Z E \ [
- t # #, and then " until
}
b
# # to
Done
b b