Privacy notice
Updated October 8, 2026. This notice describes the English worksheet website at googoodan.com/en/. The website is intended for parents and teachers choosing and printing materials for students.
Using worksheets
The worksheet website does not require an account or student information. Problem generation and print preparation take place in the browser. A shared set URL may include numbers and options needed to recreate practice. Do not add personal information to a shared URL.
Private feedback form
The Feedback & Requests form sends your request type, subject, message, page URL, and optional reply email to our service on Cloudflare Workers. Messages are stored in a private Cloudflare D1 database and can be read only through the administrator account. They are not posted publicly. Cloudflare Turnstile checks submissions for automated abuse; connection information is processed for this check and for rate limiting. Do not include student names, school information, or other personal details. To request correction or deletion of your message, contact the email below and include your receipt number. Automatic email notifications are not currently enabled.
Contact ohy0973@gmail.com. Your email address, message and attachments are used to answer questions and investigate errors. Email is delivered and stored through Gmail. Do not send a child’s name, school or photograph. Send requests to correct or delete a message to the same address. Messages are retained while needed to respond and investigate follow-up errors, and deleted when that purpose ends or a deletion request is verified, subject to any legal retention obligation.
Connection information
The current domain points to GitHub Pages. GitHub may process IP addresses, requested URLs, request times and browser information to deliver and secure pages and investigate faults. See the GitHub Privacy Statement for its processing and retention practices. The site operator does not set GitHub’s access-log retention period. See Google’s Privacy Policy for the email service.
Usage statistics
We count visits, page views, and print/PDF button clicks. A request to our statistics service on Cloudflare Workers includes the site edition, page path, event type, and a random identifier used to avoid duplicate counts. Your browser stores a random identifier for the day. Student answers and names are not included in these requests. A click count does not confirm that a worksheet was printed. Use the button below to stop future site-operated statistics requests from this browser. Google Analytics runs only after you choose Allow in its separate prompt. Your choice is saved in this browser, and you can change it with Analytics preferences. Search terms and worksheet set numbers are not sent.
Advertising and cookies
The English worksheet pages do not currently load advertising. We have added a Google AdSense verification tag and an ads.txt record for site review; these do not display ads or set advertising cookies. Before enabling advertising, we will update this notice to describe the services actually used and provide the required privacy and consent choices. The site uses browser session storage to remember worksheet navigation; this does not create a student account or save student answers to our server. Read how Google uses information from partner sites and visit Google ad settings.
Updates
Changes to services or information handling will be reflected here with an updated date. The updated date above identifies the current version of this notice.