Cookie and Advertising Disclosure

Last revised October 12, 2026

Google advertising is enabled on suitable teaching articles. Google manages the privacy choices that apply in your region; where consent is required, ads wait for your choice. Whether an ad appears also depends on Google’s availability. Refusing advertising keeps all content available. Third-party analytics are not enabled.

What the site currently uses

• Essential storage: the site is a static website; serving pages requires no cookies. If you turn off advertising using the footer’s Privacy choices control, a small first-party record remembers that preference on this device. Existing refusals continue to be honored.
• Analytics storage: none. The site does not currently use third-party analytics.
• Advertising storage: Google may store privacy choices and, when permitted by the choices and requirements that apply to your region, use cookies, web beacons or similar identifiers to deliver and measure ads.

Google advertising

Advertising requests are enabled on eligible teaching articles. Whether an ad appears depends on Google’s availability and your privacy choices.

• Personalized advertising: third-party vendors, including Google, may use cookies or similar technologies to serve ads based on a visitor's prior visits to this and other websites.
• Non-personalized advertising: vendors may also serve ads that use only contextual information (for example, the page topic) with no cookie-based personalization.
• Third-party advertising vendors: Google AdSense serves and measures advertising. Google may work with advertising partners listed in its consent message where that message applies.
• Consent choices: Google’s regional privacy message asks for consent where required. Google may receive device and page information while loading regional privacy choices. The site’s inline ad is not requested while a required choice is unanswered or when you refuse advertising storage for Google. You may review the purposes and vendors in Google’s message. Refusing consent does not block access to any article or resource.
• How to reopen choices: use Google’s regional privacy controls where available, including its Do Not Sell or Share control where applicable. The footer’s "Privacy choices" control also lets you turn off Google advertising on this device.

How advertising supports the site

Advertising helps cover hosting and maintenance costs. It is one way the site can keep its resources free for educators. The site will never require you to view or accept advertising to read content.

Editorial separation

Editorial content and advertisements are kept strictly separate. Google advertising loads only on eligible article pages. We place at most one clearly labelled advertisement between complete sections of a suitable article, away from print and download controls. Automatic ads, floating ads and full-screen interruptions are kept off. Advertising does not load on the homepage, library, resource, contact or legal pages, or downloadable printables, and ad elements are omitted from print styles. Advertisers do not control which articles are written, which conclusions articles reach, or how sources are selected. No article is written to promote an advertiser, and no payment influences editorial decisions.

Managing your choices

Open the "Privacy choices" control in the footer to turn off Google advertising on this device or review Google’s regional choices where available. Turning advertising off after Google has loaded reloads the page to stop its code. Resuming Google privacy choices removes only the site’s opt-out preference; it does not grant consent to Google. Existing Google cookies can be cleared through your browser’s settings. For details on what data the site collects, see the Privacy Policy. To learn how Google uses data when serving advertising, visit Google's advertising page; to control personalized advertising, visit Google Ad Settings.