Give Me 5 - Texas Instruments TI-73 Teachers Manual

Activity 10

Give Me 5!

Students investigate the results of tossing 5 coins.
They compare what happens to what is expected to
happen.
Setup
If your TI-73s have not been used for any random
numbers prior to this activity, you and your students
need to store an integer "seed value" to
TI-73.
With each
rand
same random-number sequence for a given seed value.
The TI-73 factory-set seed value for
generate a different random-number sequence, store
any non-zero seed value to
1. Enter the number you want for your seed value.
Have students use different seed values. (In the
example at the right,
2. Now press X 1 " "
1 " "
(For more information about seed values, refer to the
"1 Probability Menu" section in the Math chapter
of the TI-73 Guidebook .)
Discuss with students events that are equally likely to
occur, such as tossing a coin and getting a head or a
tail.
execution, the TI-73 generates the
.
rand
is used.)
1
b
1
b b.
1
Probability
order of operations
mental math
basic computation
Materials
student activity sheets (provided)
TI-73 ³
rand in each
rand is 0 . To
© 1998 T
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If you do not enter a seed
value, rand uses whatever
value happens to be the
current seed. If there is no
seed, it uses the factory-
set value of 0 .
If you want to restore the
factory-set seed value,
store 0 to rand or reset
the defaults.
I I
EXAS NSTRUMENTS NCORPORATED