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The Student Support Centre (UK) Ltd
Home based learning materials to supplement classroom work using Maths and English videos for ages 5-18. With over 40,000 students the results speak for themselves.
http://www.student-support.co.uk/
Top20Math
Online Directory for Math Education. Areas include Algebra, Geometry, Trigonometry, Calculus, Statistics.
http://www.top20math.com/