Provides plenty of worksheets to download
Gareth Pitchford's Primary
Packed with ideas and resources for primary maths, some of which may also be useful for older children with special needs.
Maths worksheets to download and use.
The Centre for Innovation in Mathematics
A very useful site packed with imaginative ideas and downloadable resources including tablesearches - a mathematical variation of the wordsearch principle designed to make tables practice fun.
NRICH Online Maths Club
Free on-line monthly magazines offering maths problems and open-ended investigations to various age groups. There's also a section for teachers with maths news, ideas and extensive links