For video tutorials try the following sites:
Exam Solutions – a really comprehensive site with thousands of videos, tutorials and also worked exam solutions for GCSE and A Level Mathematics.
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 A Level papers.
Colin Hegarty has an extensive library for GCSE and A Level (and KS3 for younger students) on HegartyMaths.
Skills Library-Maths from the University of Leeds has short video clips on a variety of topics.
Khan Academy – an extensive collection of videos.
Just Math Tutorials – another extensive collection
Math Centre Videos – good for older students
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