Privacy Policy
Effective date: October 5, 2026
Mr. E Science is an educational website operated by Ted Ehrheart. This policy describes information handled when you use the modern Mr. E Science website. Questions may be sent to mre@mrescience.com.
No registration or mailing list
The public learning resources do not require an account. We do not operate a visitor signup system, mailing list, or online student-submission system. Please do not send student records or other sensitive personal information.
If you email us, we receive your email address and the information you choose to include. We use it to respond and handle your request. Email is handled through our email providers, rather than stored by a form on this website. Emailing us does not subscribe you to a mailing list.
We periodically review and delete email correspondence. We may retain messages for follow-up or reference; we do not use a fixed retention period. You may contact mre@mrescience.com to request deletion of correspondence you have sent.
Traffic statistics
Google Analytics is currently disabled. These pages do not load a Google Analytics tag.
Google explains its information practices at https://policies.google.com/privacy.
Videos, fonts and outside services
Video-player pages embed YouTube using its privacy-enhanced player at youtube-nocookie.com. Opening those pages connects your browser to YouTube; playing a video involves additional processing by YouTube. Privacy-enhanced mode does not mean that no information is exchanged with Google.
The website also loads fonts from Google Fonts when pages open. These requests communicate technical information, such as your IP address and browser request details, to Google. Google Fonts is a separate service. The site does not load a Google Analytics tag.
Some resources link to other websites. Following a link takes you to a service with its own privacy practices. Where older pages embed outside images or widgets, those providers can receive browser requests when the page opens, even without a click.
We do not operate these outside websites or control their privacy practices. Please review their privacy policies when using their services.
- Google, including YouTube, the YouTube player on these pages, and Google Fonts: Google Privacy Policy. The Mark Rober link opens a YouTube channel, and that same policy applies.
- Quizlet: Quizlet Privacy Policy.
- CrunchLabs: CrunchLabs Privacy Notice.
This policy describes the modern website. The legacy website at old.mrescience.com may use different services; its information practices have not yet been included in this description.
Games saved on your device
Knights and Ribbon Cube save locally entered names and scores in your browser. Sudoku saves your game in progress. The current game code does not send these saved values to our server. Use a nickname rather than a real name, especially on a shared computer. Other people using the same browser profile may be able to see the saved information.
You can remove these records by clearing this site's browser storage. Doing so also removes saved game progress and scores. Browser settings can restrict cookies or other storage, but some features may stop working.
Website hosting
The website is hosted by GoDaddy, and hosting logs are maintained as part of the hosting service. We do not specify a fixed retention period for these logs because we have not confirmed one that applies to all hosting records. GoDaddy describes its privacy practices at https://www.godaddy.com/legal/agreements/privacy-policy.
Students and families
Our resources support junior-high and high-school learning, teachers, and homeschool families. Students do not need to provide their name or email address to read the public lessons. Parents or teachers should contact us on behalf of younger students. If you believe a child has sent personal information that should be removed, contact mre@mrescience.com.
Changes and questions
We will update this policy as the site's features or information practices change and show the updated effective date. Questions and privacy requests may be sent to mre@mrescience.com.