Education Technology

# Activities

• ##### Subject Area

• Math: Statistics: Probability and Random Variables

6-8

100 Minutes

• ##### Device
• TI-83
• TI-83 Plus Family
• TI-84 Plus
• TI-84 Plus Silver Edition
• ##### Other Materials
This is Activity 6 from the EXPLORATIONS Book:
Graphing Calculator Activities for Enriching Middle School Mathematics

## Heads Up! (continued)

#### Activity Overview

In this activity, students explore how to write and enter a calculator program that will simulate coin tossing for a given number of times and count the number of heads and tails. They analyze the program and modify it.

#### Before the Activity

• Set the calculator in Alpha mode
• See the attached PDF file for detailed instructions for this activity
• Print pages 51 ? 59 from the attached PDF file for your class
• #### During the Activity

Distribute the pages to the class.

Follow the Activity procedures:

• Set up the calculator to accept a new program
• Enter a name for the program
• Enter the program commands; setting a prompt that allows the user to enter the number of coin tosses to be simulated and a pause that allows the user to view the result after each coin toss
• Run the program on the calculator and enter the number of trials
• Analyze the data generated by the program
• Predict the consequences of removing the Pause command from the program code
• Delete the Pause command from the program
• Run the program again, and check the prediction
• Edit the program to include the count of heads and tails in the coin toss simulation
• Observe that the program allows one to conduct the simulation many times, quickly, and displays the results for analysis
• #### After the Activity

Students answer the questions.

Review student results:

• As a class, discuss questions that appeared to be more challenging
• Re-teach concepts as necessary