This page states the terms and conditions by which you may use the National Council of Teachers of Mathematics (NCTM) Web sites. This includes all sites with a root URL ending in nctm.org. Please read these terms carefully. If you do not agree with these terms, do not use these Web sites.
By accessing and using an NCTM Web site, you state your acceptance to be bound by these terms. NCTM reserves the right to update or modify these terms at any time. Your use of an NCTM Web site following any such change constitutes your agreement to follow and be bound by the updated terms of use. Check this page frequently for any changes to the terms of use.
The terms "you" and "user" as used herein refer to all individuals and/or entities accessing an NCTM Web site for any reason. The terms "we" and "Council" as used herein refer to NCTM, including our agents and employees.
Copyright Notice
NCTM Web sites are collective works or compilations owned and operated by NCTM. All materials on these sites--text, graphics, logos, button icons, images, applets, video and audio clips, and software--are the property of NCTM or its content suppliers and are protected by U.S. and international copyright, trademark, and other laws.
NCTM Web sites present a variety of viewpoints. The views expressed or implied on NCTM Web sites, unless otherwise noted, should not be interpreted as official positions of the Council.
Use of This Site
The following outlines acceptable and unacceptable uses of NCTM Web sites:
- You may not copy, reproduce, republish, upload, post, transmit, sell, or distribute any material, including content and graphics, on NCTM Web sites for any public or commercial purpose.
- You may download one copy of the content on any single computer for your personal, non-commercial use, provided you keep intact all copyright and other proprietary notices.
- You may use e-mail addresses on NCTM Web sites for personal, non-commercial use. Use of these e-mail addresses for any other purpose is strictly prohibited.
- Modifying materials or copying HTML code from NCTM Web sites is a violation of NCTM's copyright and other proprietary rights.
- You may not use NCTM Web sites in any manner that will infringe on the copyright, trademark, trade secret, or other intellectual property rights of others or violate the privacy, publicity, or personal rights of others.
- You may not use NCTM Web sites to post, transmit, distribute, store, or destroy material in violation of any applicable law or regulation.
- You may not use NCTM Web sites to post or transmit material that is sexually explicit, defamatory, obscene, threatening, abusive, or hateful.
If you wish to use any material posted on NCTM Web sites for any purpose other than those authorized in the terms of use, it must be with the express written consent of NCTM. For more information, contact e-permissions@nctm.org.
NCTM Logo
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Other Logos and Brand Names
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Accuracy of Information
While all reasonable attempts have been made to ensure the accuracy of information on NCTM Web sites, neither NCTM nor its information contributors can be held responsible for any errors, inaccuracies, or incomplete information contained therein. NCTM reserves the right to correct, change, or update any information