Please check the terms of copyright for conditions. These materials are openly available on public websites. As far as I can tell, all or most have an implicit permission to use them for free, but ... Checking and complying with copyright is your responsibility.
- Some may be used and photocopied freely but not sold.
- Some may be used and photocopied freely, but with restrictions (e.g. only for volunteers.
- Some may be used on-line for free, but you can't download them and photocopy them.
- Some online courses are unsuitable for any other use than online.
These links do not necessarily mean an endorsement of all views expressed in the linked-to websites.
The order is as follows:
- Topics below are given in alphabetical order.
- Websites under some topics are ordered with the most relevant first.
Much more: See webcentrals of materials
See the toolboxes page