Texas Instruments TI-73 - Manual (Page 10)

5
© 1998 T EXAS I NSTRUMENTS I NCORPORATED
Activity 2
Dice Digits
Students use 4 numbers, any operations, and grouping
symbols to write mathematical expressions that are
equal to each of the numbers 1 through 9.
Number Sense
♦
order of operations
♦
mental math
♦
basic computation
Materials
♦
student activity sheet (provided)
♦
transparency of activity sheet
♦
TI-73 ³
Setup
If your TI-73s have not been used for random number
generation prior to this activity, you and your students
need to store an integer “seed value” to
rand in each TI-73.
With each rand execution, the TI-73 generates the same
random-number sequence for a given seed value. The
TI-73 factory-set seed value for
rand is 0 . To generate a
different random-number sequence, store any non-zero
seed value to
rand .
➪
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 .
1. Enter the number you want for your seed value. Have
students use different seed values. (In the example
shown at the right,
1 is used.)
2. Now press X 1 " " 1
b
1 " "
1
b b.
(For more information about seed values, refer to the
“1 Probability Menu” section in the Math chapter of
the TI-73 Guidebook
.)
➪
If you want to restore the
factory-set seed value,
store 0 to rand or reset
the defaults.