This is not yet applied to all presentations embedded on this site (what little there is so far), but I intend to make clear which information on the slides are in the Core part of the syllabus, and which are from the Extended. As best I can, any slide that's Core will be on a pale yellow background . (Anything uploaded so far is already yellow, so there will be some Extended content on yellow at the moment too.) Any slide that is Extended will be on a green background and, where practical, say EXTENDED in the corner of the slide. Any slide that isn't strictly part of the course but adds a bit of extra information to aid understanding and relevance, will have a pink background . I'll see if I can figure out how to communicate clearly what is on the Combined syllabus, and what is on the Co-ordinated. (There are some things that are, confusingly, on the Co-ordinated Core, but Combined Extended, so that will be fun for me to figure out!)
Currently a work in progress. The sections listed in the sidebar (or menu button if you're viewing this on a mobile or narrow screen) link to pages named after the sections in the Cambridge IGCSE Co-ordinates Sciences Physics textbook. There are also links to revision sites, and a handful of Kahoot! quizzes I've made.