## PROBABILITY AND DICE activity plan

Subject: Algebra2

Time: Two class periods

Objectives:  Students will determine experimental probability rolling one die.
Students will determine experimental probability rolling a sum using
two dice.
Students will calculate the theoretical probability of rolling a sum using
two dice.
Students will do dice tossing with a calculator.

Materials:  Two dice per student
Graphing calculator
“Rolling a Die” activity sheet
“Rolling 2 Dice” activity sheet
“Theoretical Probability--Rolling 2 Dice” activity sheet
“Die Tossing with a Calculator” activity sheet
“Pair a Dies and Probability” activity sheet

Procedure:

1. Introduce and discuss the experimental probability formula:

P(event) =  (number of times the event occurs) / (number of trials)

Example:  A player hit the bull’s eye on a circular dartboard 8 out of 50.

P(bull’s eye) = 8/50 = 16%

2.  Students do the “Rolling a Die” and “Rolling 2 Dice” activity sheets and determine the experimental probability.

3.  Introduce and discuss the theoretical probability formula:

P(A) = (event A outcomes) / (sample space outcomes)

Example:  The theoretical probability of rolling odd outcomes with a number
cube is 3/6 = ½ = 50%.

4.  Students complete the “Theoretical Probability--Rolling 2 Dice” activity sheet.

5.  Students work through the “Die Tossing with a Calculator” activity sheet using the TI83 calculators.

6.  Students work through the “Pair of Dice and Probability” activity sheet using the TI83 calculators.

MaryBeth Weier