The Single Die Game: Is it Fair?

In this activity  you use a Microworlds file (roll_dice.mw2) to roll one die many times. The object is to see if you can predict which event (1, 2, 3, 4, 5 or 6) will come up most often and win the race.
  • Load Microworlds Pro
  • Open the file roll_dice.mw2 from your floppy diskette.
  • In the command center (below the prompt) type ROLL 1 100 and press return. (Make sure you have a space between ROLL and 1, and between 1 and 100)
  • You should see something like the figure below.

   Type ROLL followed by two numbers ( # of dice & # of rolls ) Exp: ROLL 2 50
   Roll 1 100

The computer just rolled one die 100 times and 2 was the winner. 

  • Try it again. What happened this time?
  • Can you predict which number will win? Why?
  • Is this a fair game? Does each number have the same chance of winning? Why?

The Two Dice Game: Is it Fair?

With 2 dice you can roll sums from 2 through 12. Does every outcome have the same chance of appearing like in the one dice game? Have the computer roll two dice 100 times. How could you make this game a fair game?

(See next 2 pages in your handout.)