Does anyone have experience with Mobymax math as a curriculum replacement? DD's teacher has agreed that we should try to set her up with an online math curriculum because it's just way too hard for the teacher to keep up with her, and she learns pretty well independently. A friend mentioned this site and said her kids liked it, but she was using it for enrichment only.

FWIW, DD is 8-almost-9 and needs 5th-to-6th grade math curriculum.