Ask Dr. Math is a popular maths question and answer service for maths students and their teachers. It has a large archive of explanations to questions that have been asked, and is a great resource for informal learning.
Professor Freedman's Math Help is a mixture of sound, humor, color, animation, and graphics with lots of help for the "math anxious" student. It provides information about basic math, algebra, study skills, math anxiety and learning styles and specifically addresses the needs of the community college adult learner. A student who is frustrated by college math can be helped by identifying his individual learning style and recognizing the instructor's teaching style.
Maths is all around us gives examples of some of the maths and stats which is used in life around us.