Privacy Policy

Summary

NDED has no accounts, no sign-up and no forms that send information to us. The numbers you type into Tutors, games and the calculator are processed in your browser and are not sent to NDED.

NDED does not show advertising and does not use analytics that track individuals or record sessions. It uses Cloudflare Web Analytics for aggregate visit counts and page performance. Some pages also load fonts, icons or videos from other services, and a few games remember settings in your browser.

The sections below explain each of these in more detail.

Information you type into the tools

Tutors, games, practice tools and the Long Division Calculator run entirely in your web browser. Answers, problems and numbers you enter are used on the page to check your work and show the next step. They are not sent to NDED or stored by NDED.

The “Do you enjoy learning math?” buttons in the sidebar only show a message on the page. Your choice is not recorded.

Settings saved in your browser

The matrix multiplication games use your browser’s local storage to remember two things on your own device:

whether game sounds are switched on or off, and
the level you reached in the 2×2 matrix game, so you can continue later.

This information stays in your browser. It is not sent to NDED, and you can remove it at any time by clearing your browser’s site data for nd-ed.org.

Website analytics

NDED uses Cloudflare Web Analytics. Because Web Analytics is enabled for the site, Cloudflare automatically adds a small performance script (a “beacon”) to NDED’s pages. It gives us aggregate information, such as how many times pages are viewed and how quickly they load.

According to Cloudflare, Web Analytics does not use cookies, does not use local storage to track visitors, does not track individual users across websites, and does not collect or use visitors’ personal data. See Cloudflare Web Analytics for details.

Services used to deliver the site

When your browser loads a page, it connects to the services below. Like any website request, these connections share technical details such as your IP address and browser type with the service.

Cloudflare hosts NDED and delivers its pages. Cloudflare processes request information to serve the site and protect it from abuse.
Google Fonts provides some of the typefaces used on the site.
cdnjs (run by Cloudflare) provides the Font Awesome icon set.
YouTube videos are embedded on the matrix multiplication pages. The video player loads from YouTube, which may set its own cookies, especially if you play the video.
SaaSHub provides a badge image shown in the home page sidebar.

Each of these services has its own privacy policy.

Links to other websites

Some pages link to other websites, such as MatrixCalculator.net. When you follow a link, the other website’s privacy policy applies.

When you email us

If you contact NDED at [email protected], we receive your email address and whatever you include in your message. We use it only to read and reply to your message, and we do not add you to a mailing list.

Children

NDED is designed for learners of all ages, including children. The site does not ask anyone to create an account or give their name, email address or other personal details in order to use it. We recommend that children ask a parent, guardian or teacher to send any email to NDED for them.

What NDED does not do

NDED does not sell personal information.
NDED does not show advertising.
NDED does not create user profiles or track learners’ progress on its servers.

Changes to this policy

This policy describes NDED as it works today. If we add a feature that handles personal information in a new way, we will update this page before that feature is available. The date below shows when the policy last changed.

Questions about this policy can be sent to [email protected].