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Using the TI-73: A Guide for Teachers
Probability
© 1998 T
EXAS
I
NSTRUMENTS
I
NCORPORATED
Activity
—
Part A
Have students perform the steps unless otherwise
indicated. Have them play the game “Get Ahead with More
Heads.” The instructions follow.
1. Group students into pairs.
2. Using the coin-toss function of the TI-73, toss 5 coins.
a. Return to the Home screen.
- l
b. Access the
Math
menu and select
coin
.
1 " " S
c. Toss 5 coins.
R E b
3. Explain to students that
1
means heads, and
0
means
tails. Heads are worth 1 point each. Tails are worth 0
points each. Thus,
{0 1 0 1 0}
means
{T H T H T}
and
earns a score of 2 points.
4. Press :.
5. Student A: Press b. Record the value of the toss
under Trial 1, Student A on the Get Ahead With More
Heads Score Sheet.
6. Student B: Press b. Record the value of the toss
under Trial 1, Student B on the Score Sheet.
7. Let students keep taking turns until all 5 trials are
completed.
➪
In this game,
1
means heads
and
0
means tails.
8. Discuss with students:
What is the greatest possible score? (25)
What is the least possible score? (0)
Raise your hand if you had the highest score in the
game you played with your partner.
What would the result have been if tails were worth 1
point and heads were worth 0 points?
9. Have students play 4 more games and record the
results.