Stimulating Understanding of Computational science through Collaboration, Exploration, Experiment, and Discovery for students with Hearing Impairments
a collaboration of the Shodor Education Foundation, Inc., Eastern North Carolina School for the Deaf, Barton College, the National Technical Institute for the Deaf, and Interpreters, Inc.

For Teachers!

How does your hair know how long to grow?

This page has links to help you download the models used in this module.

The three JavaScript calculators used in this lesson can be used online or you can save them to your computer. Use these links to open the web page. With the page open in your web browser, open the browser's File pull down menu. Select save as and save it on your computer. To open the calculator from your computer, open your browser. Open the browser's File pull down menu. Select Open or Open page and browse for the file you saved.

The JavaScript calculators are:

Month to day converter,

Year to day converter,

Hair length calculator.

This lesson uses two Stella models. They require Stella software language to run. A free save disabled version of Stella is available at:

http://www.hps-inc.com/

Both the Stella reader and save disabled versions are free. The disabled version allows your students to create models and modify models like mine. If you find Stella useful you can get an educational site license for a reasonable price. The only difference with the purchased version is that you and your students can save the models you make. 

If you use PCs you can down load the free zipped Stella models. 

STELLA Model

You can get the software to unzip them at http://winzip.com/: Download the evaluation version.

If you use Macs you can down load the free compressed Stella models

Hair1

Hair8

You will need to decompress these files. A free StuffIt Expander utility can be downloaded from http://www.stuffit.com/expander/

The data from measuring my wife's hair is available on an Excel spreadsheet.

Hair measurements.

Developed by
The Shodor Education Foundation, Inc.

Copyright © 1999-2001 by The Shodor Education Foundation, Inc.

This project is supported, in part, by the National Science Foundation Opinions expressed are those of the authors and not necessarily those of the National Science Foundation.