Donating to Purplemath

Purplemath is a free-access site, created by Elizabeth Stapel. It is neither owned nor supported by any business or university.

To help support Purplemath in its mission, please use the button below to make a donation to the site.

If you would prefer to make your donation through the mails, rather than electronically, then please send cheque or money-order to the following address:

Elizabeth Stapel
P.O. Box 1184
Palatine IL 60078-1184
USA

Please make your cheque payable to "Elizabeth Stapel". If you would like to receive e-mail notification of receipt of your mailed donation, please include your e-mail address within your letter.

Note: If you would like to obtain the Purplemath web site on CD for offline viewing, please do not use the above button. Instead, use the button on the "Lessons CD" page. Thank you.

We would like to thank all of you who have taken the time to e-mail and let us know how Purplemath has helped you. We are proud of your successes, and are glad to have been a part of them.

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