**Probability**

Ana Timbers Stockton

4420 North Beacon

Chicago IL 60640

(773) 535-2450

**Objective**:

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 paper

B. 6 blue marbles, 4 red marbles, and 2 yellow marbles

**Strategy**:

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

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