Khan Academy is free to register to both parents and learners.  It is especially great as a math resource as it covers k - 12 grade levels.  Although an American resource, the curriculum shared on the website is very similar to ours in NB.  The program has excellent tutorial videos that the students can watch and is then followed by immediate feedback questions to test their understanding.  It's a great resource that allows students and parents to work on material together as they progress through videos an practice questions on specific content.