Education Technology

# Activities

• ##### Subject Area

• Math: Algebra I: Sequences and Series

6-8

60 Minutes

• ##### Device
• TI-73 Explorer™

TI Connect™

• ##### Accessories

CBL™/CBL 2™
TI Connectivity Cable

• ##### Other Materials
This is Activity 9 from the EXPLORATIONS Book:
Data Collection Activities for the Middle Grades with the TI-73, CBL™, and CBR™

The following materials are required for this activity:
• Meter or yard stick
• 6 different golf balls

## The Golf Ball Challenge

#### Activity Overview

In this activity, students will measure the bounce heights of golf balls dropped from a height. They examine the geometric sequence in the successive bounce heights and determine the constant or common ratio and the rate of decay of the bounce.

#### Before the Activity

• Install the CBL/CBR Application on the students' graphing calculators using TI Connect™ or TI-GRAPH LINK™, TI Connectivity cable and the unit-to-unit link cable
• Connect the TI-73 to the CBR 2 unit
• See the attached PDF file for detailed instructions for this activity
• Print pages 131 - 138 from the attached PDF file for your class
• #### During the Activity

Distribute the pages to your class.

• Place the CBR at a certain height and drop the golf balls from beneath it
• Record atleast 4 bounce heights on each ball
• Examine the change in the bounce height of consecutive bounces
• Divide a bounce height by the preceding bounce height to determine the common ratio
• Repeat the experiment for the remaining balls
• Identify which ball will travel the greatest distance
• #### After the Activity

Students will fill in the Data Collection and Analysis Sheet and answer questions listed in it.

Review student results:

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