I did a forum search and couldn't find anything, so in case anybody else is interested, I thought I'd compile the educational websites I've found that have been useful to us.
I've found the good free stuff tends to taper off after preschool/reception and there doesn't seem to be much for the latter half of primary school.
So for preschool/reception, I like http://starfall.com
, which is a great free site for phonics. They have another section for early primary years that's not free, but all their original material is still free and was fabulous for helping my kids learn to read.
I like BBC Schools http://www.bbc.co.uk/schools/0/
and BBC Bitesize http://www.bbc.co.uk/education
, although about a third of the games on BBC Bitesize crash my browser (I'm on an older Mac and our country internet is SO slow).http://www.usborne.com/quicklinks/eng/?loc=uk
has a lot of good links, too. (A lot of the nonfiction Usbourne books refer you to their quicklinks page, but you don't need the books to make use of the links.)
On youtube, I like https://www.youtube.com/user/crashcourse
(everything from history to anatomy) and https://www.youtube.com/user/crashcoursekids
(mostly science at the moment).
And then there is Khan Academy: http://khanacademy.org/
<-- My kids really liked their maths courses.
AND I've just discovered http://mrnussbaum.com
, which is all free and covers preschool through year 6. (Finally, something that covers the latter half of primary school!) I discovered it because I was looking for reading comprehension work, and they have both printables and on-line exercises.
There are also a lot of free college/Uni courses on-line (OU have some free ones here: http://www.open.edu/openlearn/free-courses/full-catalogue?source=freecoursespage
, as do http://cs50.tv
), although I don't know any free secondary school on-line sources off the top of my head.
Spam me with your favourite free educational websites/on-line resources in the comments! Pretty please!