Starfall is a free public service site designed to motivate children to read with phonics. The site is kept up-to-date and there are a huge variety of free activities for children to use on their home computer.
SillyBooks.net features animated free reading and writing and learning for kids. Children can even have their own stories published. The quality is high and the stories are engaging.
The Reading Rockets project is comprised of PBS television programs and online services offering information and resources on how young kids learn to read and why so many struggle. There are lots of ideas and resources for parents here aimed at early and emerging readers.
Learning Disabilities Online is a good place to start learning about Learning Disabilities and ADHD. It is an American site so some strategies are not applicable in Canada but the site has a huge resource list of links to organizations, free on-line resources and supports.
do2Learn has a wide variety of free resources supporting students with special needs including instruction on bus safety and facial expressions, picture cards, schedulers and print activities. The site is well-maintained and easy to use.
Learning Tools 4 All contains many free digital text-to-speech tools in one place and supports to help you choose the best one for you and your child. The site is on a Wiki model and may be a bit hard to use for some people.