I just got the Dragon Box for my 3rd and 4th grader a few days ago. Is there just the regular and bonus section? My girls have already finished it, and it seems like there should be some more. What is the Dragon Box 12+ like? Is it a natural progression from the DB 5+?
We are also doing Ten Mark and Khan Academy, but they are pretty dry. Anything else as fun as Dragon Box?

I like KickBox and BigSeed. They address spatial thinking more than anything that looks directly mathy.

My kids went from 5+ to 12+ . I think it is a natural progression.

My kids went really fast through the first one too, they are loving the second one. The 12+ covers most of the material from the first one really quickly and then settles into new concepts. I think there is definite progression.