Welcome to PrepOK. By using prepok.com (the "site"), you agree to these Terms of Use. PrepOK is operated by QuantumLoops Technologies. If you do not agree with these terms, please do not use the site.
Using the site
PrepOK is free to use for personal learning, classroom, and general educational purposes. You may browse, use the interactives, and share links to any page.
Embedding our interactives
Many of our interactives can be embedded on your own website, blog, or learning management system using the embed code we provide. You may do so freely, provided you keep the included attribution link to PrepOK intact and do not present the interactives as your own work. Please do not remove or obscure that attribution.
Intellectual property
The site's content, lessons, text, and interactive widgets are owned by PrepOK / QuantumLoops Technologies or used under license, except for third-party facts and data credited in each lesson's sources. Aside from the embedding permission above, you may not copy, republish, or redistribute our content as your own without permission.
Acceptable use
Please use the site lawfully and reasonably. Do not attempt to disrupt or break the site, scrape it abusively, or use it for any unlawful purpose.
Educational disclaimer
PrepOK is provided for general educational purposes on an "as is" and "as available" basis, without warranties of any kind. Our interactive models are simplified to teach the underlying ideas and are not a substitute for professional, laboratory, or exam-grade sources. Please verify anything important against authoritative references before relying on it. To the extent permitted by law, we are not liable for any loss arising from use of the site.
Advertising
The site is supported by advertising, including Google AdSense. How advertising and cookies work, and the choices you have, are described in our Privacy Policy.
Third-party links
Our lessons link to external sources and websites we do not control. We are not responsible for their content or practices.
Changes
We may update these terms from time to time. When we do, we will revise the "Last updated" date above. Continued use of the site means you accept the updated terms.
Governing law
These terms are governed by applicable law. Nothing in them limits any rights you may have under the mandatory laws of your country of residence.
Contact
Questions about these terms? Email support@prepok.com.