David Smith’s The Maths Teacher site has a great collection of videos for both GCSE (age 14-16) and A Level (16-18). Transcripts are available for each lesson, also exercises with worked solutions. Many of the GCSE videos would also be useful for younger students. There are also videos and written solutions to some legacy A Level papers.

http://www.youtube.com/user/HEGARTYMATHS?feature=guide

A youtube channel that helps students revise GCSE and A-Level Maths. Also topics are taught in video tutorials – look at various playlists.

Thank you very much Colin – we’ll explore those.