43
Simulated Dice
Junior high school
• • • • • • • • • • • • • • • • • • • • • Objective • • • • • • • • • • • • • • • • • • • • •
Use computers as a source of large samples and as a means to simulate events.
Understand and use relative frequency as an estimate of probability, and judge when sufficient trials
have been carried out.
Recognize situations where probabilities can be based on equally likely outcomes.
• • • • • • • • • • • • • • • Explanation of the activity • • • • • • • • • • • • • •
Use the calculators to simulate rolling dice.
While working on this activity, students will be developing a feel for probability. In particu-
lar, the relationship between estimating probabilities from experimental evidence and calcu-
lating probabilities based on equally likely outcomes.
• • • • • • • • • • • • • • • • • Using the calculator • • • • • • • • • • • • • • • • •
Calculator functions used: Random numbers, addition, fixed number calculation
Let’s use our calculators to simulate rolling dice.
Example:
To simulate rolling dice, we want the numbers from
1
to 6,
so the formula will be
1
+ RANDOM(5).
However, this will also generate decimals. So, change to
the FIX mode by pressing TAB and 0 until appears FIX on
a screen. Now only integers from
1
to 6 will be generated.
Set TAB to zero so that values to the right of the decimal
point will not be displayed. (Values to the right of the
decimal point are rounded to the nearest whole number.)
0
To generate random numbers from
1
to 6, calculate the
formula
1
+ RANDOM(5).
Try this numerous times.
1
5
Let’s use the calculator to simulate the results obtained by
adding the scores on two
1
– 6 dice.
Press the following buttons and then start operation.
*
1
It is the nature of random numbers
that the value may not be the same for
each time.
......
FIX
DEG
FIX
DEG
1+RANDOM(5)=
*
1
FIX
DEG
1+RANDOM(5)=
*
1
FIX
DEG
Summary of Contents for EL-531RH
Page 1: ...SCIENTIFIC CALCULATOR TEACHER S GUIDE JULY 1999 EL 531RH ...
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