Effective date: August 1, 2026
Cookies are small data files or similar browser-storage technologies. This site does not use reader accounts, saved preferences, comments or analytics configured by the publisher. It does use Google AdSense, and hosting or security systems may use technical storage.
Advertising cookies
Google and participating vendors may use cookies, web beacons and identifiers to serve, limit, secure and measure advertisements. Depending on location and consent, ads may be personalised using prior activity or may be non-personalised and based mainly on page context and limited technical information.
Consent records
A regional consent message may store a visitor’s choices so the request is not repeated unnecessarily. Visitors can reopen or change choices where that control is available.
Browser-only tools
The planning tools calculate within the page. The publisher does not intentionally send or save the values entered into those tools. Avoid entering confidential, personal or regulated information.
Managing cookies
Most browsers allow cookies to be viewed, blocked or deleted. Blocking advertising cookies can reduce personalisation and may affect consent storage, but the educational content should remain available. Google advertising choices are also available through Google Ads Settings.
Changes
Cookie practices can change as browsers, laws and advertising systems evolve. This page will be updated when material changes are made.