I use ALEKS and Mathletics in my course and I like them both. Mathletics is aesthetically pleasing and game-based, while ALEKS is great for assessments and progress reporting.

SAS Curriculum Pathways and The University of California College Prep offer free courses online.

Schools must register for SAS, but the UC programs are free and available.

http://www.sascurriculumpathways.com/

http://www.ucopenaccess.org/

Daa'iyah Na'im
Director/Head of School
The AGVI Academy for Gifted Youth
http://AGVIgifted.org