HomeschoolMath.net is a comprehensive math resource site for homeschooling parents, parents, and teachers that includes free math worksheets, lessons, online math games lists, ebooks, a curriculum guide, reviews, and more. The resources emphasize understanding of concepts instead of mechanical memorization of rules.
IXL has lessons now! Check out their 4th grade lessons and 5th grade lessons.
Generate math worksheets
galore from 1st grade number charts to 7th grade proportions and square roots. Customizable and randomly generated.
Homeschool math curriculum guide
— articles, scope & sequence chart, how to find inexpensive math materials, and reviews of ALL
popular homeschool math curricula left by my site visitors.
A very comprehensive list of online math games
and resources, arranged by math topic from addition & subtraction all the way to geometry, algebra, and calculus.
of dozens of interesting math products, such as Giggle Facts, Dr. Math, Harold Jacobs, Mathletics, IXL, YourTeacher, Time4Learning, Math Goodies, Hands-On Equations, etc. etc.
My math videos
at Youtube teach both the teacher and the student. These will also work as lesson plans for teachers.