HO: Hanging Tennis Ball

Hanging Tennis Ball

Judges Version
Problem Source: http://www.geocities.com/nepaootmspon/

This is a hands-on problem. You have one minute to determine which team members will solve the problem.

JUDGE READS TO TEAM (after participants are determined):
You will have 7 minutes to complete this problem. You may talk or ask questions at any time; however, time continues. At the end of 7 minutes, you will present your solution.

Your problem is to design and build a device to hang a tennis ball. You may not pierce the tennis ball. You will be given materials to be used in your solution. No other materials may be used. At the end of six minutes, the judge will hang your device from a door jamb or some other suitable place using a piece of masking tape.

Score will be as follows:

• 1-20 points for creativity of the device
• 1-20 points for team work
• 5 point for every inch from the top of the device to the top of the tennis ball.

Materials and Setup

Give each team the following materials.

• 1 Tennis Ball
• 4 Toothpicks
• 2 Paper Clips
• 2 Straws
• 1 Sheet of Paper
• 2 Rubber Bands

Scoring Grid

Item	Quantity	Value	Total
Creativity of the device		1 - 20
Team Work		1 - 20
Inches from device to ball		x 5