`ProbabilityAna Timbers                    Stockton                               4420 North Beacon                               Chicago IL 60640                               (773) 535-2450Objective:To observe the relationship between theoretical probability and experimental results.  This activity would work with a seventh grade class.However, students in grades sixth and eighth grade would enjoy this activity.Materials Needed:A.  glue, notepad, ruler, pens, scissors, 2 sheets of different-colored poster board, large sheet of graph paperB.  6 blue marbles, 4 red marbles, and 2 yellow marblesStrategy:Using the coins students will be able to realize probability is useful in our daily life.  Probability helps us understand the world around us and organize information in ways that make it easier to comprehend. 1.  Students will insert 6 blue marbles, 4 red marbles, and 2 yellow marbles     into a small bag. 2.  Each student will reach into the bag 40 times and chart how    many times marbles of each color were selected. 3.  Using graph paper students will record their findings.4.  Students will compare the relationship between the theoretical probability    and the actual results of our experiment.5.  6/12 (1/2), 4/12 (1/3), 2/12 (1/6), are the theoretical probabilities of     selecting at random, respectively, each of the three colors. Performance Assessment:I will use a grading rubric for this lesson.  This rubric contains the Chicago Public Schools' Curriculum Framework Statements. Conclusions:Students will be able to identify the phenomenological approach to mathematics.  The theoretical probabilities should be observed in the results of our experiment. Reference:         Family Math Book `